ใบงานประกอบการสอน_หน่วยการเรียนรู้ที่_1_จำนวนนับ_และการบวก_การลบ_การคูณ_การหาร (1)

ฝ.๑.๒๒/ผ.๒๒ แบบฝกึ หดั 1.22 เขียนภาพแสดงวธิ ีคดิ ประโยคสัญลักษณ์ และแสดงวธิ ีทำ� 1. จงั หวัดหน่งึ มปี ระชากรชาย 789,717 คน มปี ระชากรหญงิ มากกวา่ ประชากรชาย 10,748 คน จังหวัดน้ีมปี ระชากรหญงิ ก่คี น ประโยคสัญลักษณ์……………………………………………………….......…………………………... วิธีทำ� ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ตอบ………………………………………….………………………………………………………..….……. สถาบันส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 49

ฝ.๑.๒๒/ผ.๒๒ 2. ป ที แี่ ลว้ พ่อมรี ายได้ 378,000 บาท ปนี พี้ อ่ มรี ายได้น้อยกว่าปีท่ีแลว้ 37,500 บาท ปีน้พี อ่ มีรายไดก้ ีบ่ าท ประโยคสญั ลกั ษณ์……………………………………………………….......…………………………... วธิ ีทำ� ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ตอบ………………………………………….………………………………………………………..….……. สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 50

ฝ.๑.๒๒/ผ.๒๒ 3. ถา้ ทด่ี นิ ราคา 1,500,000 บาท และราคาทด่ี นิ นอ้ ยกวา่ คา่ กอ่ สรา้ งบา้ น 900,000 บาท คา่ ก่อสรา้ งบ้านราคาเทา่ ไร ประโยคสญั ลกั ษณ…์ …………………………………………………….......…………………………... วธิ ที ำ� ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ตอบ………………………………………….………………………………………………………..….……. สถาบนั สง่ เสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 51

ฝ.๑.๒๒/ผ.๒๒ 4. ปนี บี้ รษิ ทั สง่ ออกสนิ คา้ ได้ 534,000 กลอ่ ง ปนี สี้ ง่ ออกไดม้ ากกวา่ ปที แี่ ลว้ 35,000 กลอ่ ง ปที แี่ ล้วบริษัทส่งออกสนิ ค้าได้กก่ี ล่อง ประโยคสญั ลักษณ…์ …………………………………………………….......…………………………... วิธที ำ� ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ……………………………………………………………………………………………………...….………… ……………………………………………………………………………………………………...……..….…. ………………………………………………………………………………………………………....………… ตอบ………………………………………….………………………………………………………..….……. สถาบนั ส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 52

ฝ.๑.๒๓/ผ.๒๓ แบบฝึกหัด 1.23 สร้างโจทยป์ ญั หา 2 ข้อ จากประโยคสญั ลกั ษณท์ ี่กำ� หนด 1. 6,968,000 + 2,500,000 = 1) …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. ……………………………………………………………………………………………………..………. 2) …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. ……………………………………………………………………………………………………..………. 2. 524,000 – 78,500 = 1) …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. ……………………………………………………………………………………………………..………. 2) …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. …………………………………………………………………………………………………..…………. ……………………………………………………………………………………………………..………. สถาบันสง่ เสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 53

ฝ.๑.๒๔/ผ.๒๔ แบบฝกึ หัด 1.24 ใชข้ อ้ มูลจากภาพท่ีก�ำหนด สรา้ งโจทย์ปญั หา และหาคำ� ตอบ 24,000 บาท 19,000 บาท 12,500 บาท 30,900 บาท 1. โจทยป์ ญั หาการบวก ประโยคสัญลักษณ์ ................................................................................................... โจทย์ ......................................................................................................................... ................................................................................................................................... ................................................................................................................................... ................................................................................................................................... ตอบ .......................................................................................................................... สถาบันสง่ เสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 54

ฝ.๑.๒๔/ผ.๒๔ 2. โจทย์ปญั หาการลบ ประโยคสัญลักษณ์ ................................................................................................... โจทย์ ......................................................................................................................... ................................................................................................................................... ................................................................................................................................... ................................................................................................................................... ตอบ .......................................................................................................................... 3. โจทยป์ ญั หาการบวกหรือโจทย์ปัญหาการลบ ประโยคสญั ลกั ษณ์ ................................................................................................... โจทย์ ......................................................................................................................... ................................................................................................................................... ................................................................................................................................... ................................................................................................................................... ตอบ .......................................................................................................................... สถาบันสง่ เสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 55

ฝ.๑.๒๕/ผ.๒๕ แบบฝกึ หดั 1.25 1. แสดงวธิ ที �ำ 1) 207,341 x 7 = 2) 9 × 1,987,643 = วธิ ที �ำ ................................................ วิธที �ำ ................................................ ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... ........................................................... 2. เตมิ ผลคณู 2) 14,523 x 6 = .......................... 1) 25,130 x 4 = .......................... 4) 53,942 x 3 = .......................... 3) 2 x 75,734 = .......................... 6) 8 x 97,260 = .......................... 5) 27,153 x 4 = .......................... 8) 860,042 x 8 = .......................... 7) 4 x 87,203 = .......................... 10) 7 x 258,102 = .......................... 9) 350,837 x 5 = .......................... สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 56

ฝ.๑.๒๖/ผ.๒๖ แบบฝกึ หดั 1.26 1. หาผลคณู ของโจทย์การคูณตอ่ ไปนี้ 1) 1,205 × 20 = 2) 40 × 3,511 = 1,205 × 20 = ............................. 40 × 3,511 = ............................. = ............................. = ............................. = ............................. = ............................. 3) 41,027 × 60 = 4) 30 × 26,910 = 41,027 × 60 = ............................. 30 × 26,910 = ............................. = ............................. = ............................. = ............................. = ............................. 5) 20,009 × 90 = 6) 70 × 77,271 = 20,009 × 90 = ............................. 70 × 77,271 = ............................. = ............................. = ............................. = ............................. = ............................. 2. เติมผลคณู 1) 25,130 × 40 = ........................ 6) 14,523 × 60 = ........................ 2) 20 × 75,734 = ........................ 7) 53,942 × 3 = ........................ 3) 27,153 × 40 = ........................ 8) 80 × 97,260 = ........................ 4) 40 × 87,203 = ........................ 9) 860,042 × 80 = ........................ 5) 350,837 × 50 = ........................ 10) 70 × 258,102 = ........................ สถาบนั สง่ เสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 57

ฝ.๑.๒๗/ผ.๒๗ แบบฝกึ หัด 1.27 1. หาผลคูณของโจทยก์ ารคณู ตอ่ ไปน้ี 1) 2,425 × 200 = 4) 300 × 1,517 = 2,425 × 200 = ............................. 300 × 1,517 = ............................. = ............................. = ............................. = ............................. = ............................. 2) 21,329 × 400 = 5) 700 × 16,090 = 21,329 × 400 = ............................. 700 × 16,090 = ............................. = ............................. = ............................. = ............................. = ............................. 3) 50,009 × 600 = 6) 800 × 47,277 = 50,009 × 600 = ............................. 800 × 47,277 = ............................. = ............................. = ............................. = ............................. = ............................. 2. เติมผลคณู = = 1) 987 x 400 = 2) 9,000 x 640 = 3) 45,900 x 300 = 4) 45,800 x 600 = 5) 59,800 x 400 6) 386,000 x 200 สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 58

ฝ.๑.๒๘/ผ.๒๘ แบบฝึกหดั 1.28 1. หาผลคูณ 1) 1,234 x 34 = 1 2 3 44 3 x 4936 1234 x 4 37020 1234 x 30 41956 ตอบ .. . . .. .๔...๑...,.๙..๕...๖............. 2. แสดงวิธที �ำ 1) 34 x 219 = ว.. .ธิ ..ีท...ำ� .. . ....................................................................................................................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ตอบ ............................................................................................................. 2) 508 x 32 = .ว. .ธิ ..ีท...�ำ.. . ....................................................................................................................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ตอบ ............................................................................................................. สถาบันส่งเสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 59

ฝ.๑.๒๘/ผ.๒๘ 3) 1,056 × 16 = .ว. .ธิ ..ีท...ำ� .. . ....................................................................................................................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ตอบ ............................................................................................................. 4) 32 × 4,216 = .ว. .ิธ..ที ...�ำ.. . ....................................................................................................................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ตอบ ............................................................................................................. 5) 2,099 × 41 = ว.. .ธิ ..ที...�ำ.. . ....................................................................................................................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ตอบ ............................................................................................................. สถาบนั ส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 60

ฝ.๑.๒๘/ผ.๒๘ 6) 82 × 16,900 = ว.. .ิธ..ที...ำ� .. . ....................................................................................................................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ตอบ ............................................................................................................. 3. หาผลคณู = = 1) 2,134 x 15 = 2) 4,156 x 13 = 3) 3,820 x 22 4) 4,070 x 65 สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 61

ฝ.๑.๒๙/ผ.๒๙ แบบฝกึ หดั 1.29 แสดงวิธหี าผลคณู 1. 412 x 706 = ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... 2. 651 x 513 = ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 62

ฝ.๑.๒๙/ผ.๒๙ 3. 382 x 1,459 = ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... 4. 3,678 x 412 = ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 63

ฝ.๑.๓๐/ผ.๓๐ แบบฝึกหัด 1.30 แสดงวิธีทำ� 1. 10,245 x 515 = วธิ ีท�ำ .......................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ตอบ .......................................................................................................... 2. 52,525 x 327 = วิธที ำ� .......................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ตอบ .......................................................................................................... สถาบนั ส่งเสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 64

ฝ.๑.๓๐/ผ.๓๐ 3. 214,795 x 38 = วิธีทำ� .......................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ตอบ .......................................................................................................... 4. 12,553 x 148 = วิธีทำ� .......................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ตอบ .......................................................................................................... สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 65

ฝ.๑.๓๐/ผ.๓๐ 5. 41,586 x 3,927 = วธิ ที ำ� .......................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ตอบ .......................................................................................................... 6. 95,131 x 4,369 = วิธที �ำ .......................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ..................................................................................................................... ตอบ .......................................................................................................... สถาบันส่งเสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 66

ฝ.๑.๓๑/ผ.๓๑ แบบฝกึ หัด 1.31 แสดงวิธหี าผลหารโดยการหารยาว พรอ้ มตรวจคำ� ตอบ 1. 1,404 ÷ 6 = 2. 6,810 ÷ 6 = วิธที ำ� ............................................. วิธที �ำ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจคำ� ตอบ ................................ ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจค�ำตอบ ................................ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. สถาบนั ส่งเสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 67

ฝ.๑.๓๑/ผ.๓๑ 3. 4,312 ÷ 8 = 4. 194,607 ÷ 7 = วธิ ีทำ� ............................................. วิธีทำ� ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจคำ� ตอบ ................................ ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจค�ำตอบ ................................ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 68

ฝ.๑.๓๑/ผ.๓๑ 5. 373,688 ÷ 4 = 6. 180,837 ÷ 9 = วิธที �ำ ............................................. วิธที ำ� ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจคำ� ตอบ ................................ ............................................. ............................................. ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจค�ำตอบ ................................ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. สถาบนั สง่ เสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 69

ฝ.๑.๓๒/ผ.๓๒ แบบฝกึ หดั 1.32 แสดงการหารสัน้ และตรวจค�ำตอบ ตัวอยา่ งที่ 1 1,404 ÷ 6 = วิธีทำ� ......6.. ..)_..._1.._..4._..0._..2._4..2_....................................................................................... ...... ...........2....3...4..2....................................................................................... ......1..,.4..0..4....÷....6...=....2...3..4................................................................................ ตอบ ......๒...๓..๔...................................................................................................... ......ต..ร..ว..จ..ค...�ำ..ต..อ...บ.. .. .2..3..4....x...6....=....1..,.4..0..4.......................................................... 1. 6,810 ÷ 6 = วิธที �ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. 2. 4,312 ÷ 8 = วิธที �ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. สถาบันสง่ เสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 70

ฝ.๑.๓๒/ผ.๓๒ 3. 5,260 ÷ 5 = วิธีทำ� ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. 4. 17,124 ÷ 4 = วิธที �ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. 5. 68,358 ÷ 3 = วิธีทำ� ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. 6. 353,570 ÷ 7 = วิธีท�ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. สถาบันสง่ เสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 71

ฝ.๑.๓๓/ผ.๓๓ แบบฝึกหัด 1.33 แสดงวิธีหาผลลพั ธ์โดยการหารยาว พร้อมตรวจค�ำตอบ 1. 719 ÷ 8 = 2. 1,386,479 ÷ 9 = วธิ ที ำ� ............................................. วิธีทำ� ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจค�ำตอบ ................................ ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ............................................. ............................................. ............................................. ตรวจคำ� ตอบ ................................ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. สถาบันส่งเสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 72

ฝ.๑.๓๓/ผ.๓๓ 3. 411,200 ÷ 3 = 4. 209,115 ÷ 8 = วิธีทำ� ............................................. วิธีทำ� ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ตอบ ............................................. ............................................. ............................................. ตรวจค�ำตอบ ................................ ตรวจคำ� ตอบ ................................ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 73

ฝ.๑.๓๓/ผ.๓๓ 5. 446,425 ÷ 3 = 6. 280,888 ÷ 9 = วิธีทำ� ............................................. วิธที ำ� ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ตอบ ............................................. ตอบ ............................................. ............................................. ............................................. ตรวจค�ำตอบ ................................ ตรวจค�ำตอบ ................................ ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 74

ฝ.๑.๓๔/ผ.๓๔ แบบฝกึ หดั 1.34 แสดงวธิ หี าผลลพั ธโ์ ดยการหารกัน พรอ้ มตรวจค�ำตอบ 1. 719,095 ÷ 8 = วิธที �ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. 2. 1,386,479 ÷ 9 = วธิ ีท�ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. 3. 411,200 ÷ 3 = วธิ ที ำ� ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 75

ฝ.๑.๓๔/ผ.๓๔ 4. 209,115 ÷ 8 = วธิ ีท�ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. 5. 446,425 ÷ 3 = วธิ ีทำ� ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. 6. 280,888 ÷ 9 = วิธที �ำ ................................................................................................................. ................................................................................................................. ................................................................................................................. ตอบ ................................................................................................................. ................................................................................................................. ................................................................................................................. ................................................................................................................. สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 76

ฝ.๑.๓๕/ผ.๓๕ แบบฝกึ หัด 1.35 หาผลลพั ธ์และตรวจสอบค�ำตอบ ตวั วอ ิธย ีท ่า งำ� ห. . .า. .ผ . .ล.2.ล.0..ัพ .)_.ธ.01._.ข์ 03.._อ.62.ง_.60.._1...,.3..2..0....÷....2..0...=.................................................................... . .............................1..2..0.. ..................2..0....×....6...ส..บิ........................................................ . .............................1..2..0........................................................................................... . .............................1..2..0.. ..................2..0....×....6...ห...น..่ว..ย................................................... . .................................0........................................................................................... ............................................................................................................................. .ต...ร..ว..จ..ส..อ...บ.. ......6..6....×....2..0.. ........=... .1...,.3..2..0.................................................................... .ด...งั ..น..้ัน... ............1..,.3...2..0....÷...2...0.. ..=... .6...6......................................................................... ต อบ .............๖...๖.................................................................................................. 1) 600 ÷ 50 = วธิ ที �ำ ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ ................................................................................................................... สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 77

ฝ.๑.๓๕/ผ.๓๕ 2) 1,474 ÷ 70 = วิธที ำ� ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. 3) 880 ÷ 80 = วธิ ที �ำ ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบันสง่ เสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 78

ฝ.๑.๓๕/ผ.๓๕ 4) 11,521 ÷ 90 = วธิ ีทำ� ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบนั ส่งเสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 79

ฝ.๑.๓๖/ผ.๓๖ แบบฝกึ หดั 1.36 หาผลลัพธ์และตรวจสอบ ตวั อย่าง หาผลลพั ธข์ อง 1,904 ÷ 34 และตรวจสอบ .......3..4... )_...01_..09._.50.._64..._......................................................................................... วิธที �ำ . ............................1..7..0... .................3..4....×....5...ส...บิ ........................................................ . ............................2..0..4............................................................................................ . ............................2..0..4... .................3..4....×....6...ห...น...่ว..ย................................................... . ................................0............................................................................................ ............................................................................................................................. .ต..ร..ว..จ..ส...อ..บ... ......5..6...×....3...4.. .......=... ..1..,.9..0...4.................................................................... .ด..งั..น...้นั .. .............1..,.9..0..4....÷....3..4.. ..=... ..5..6.......................................................................... ต อบ ............๕...๖................................................................................................... 1. 420 ÷ 35 = วธิ ที ำ� ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบันส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 80

ฝ.๑.๓๖/ผ.๓๖ 2. 1,248 ÷ 16 = วิธที �ำ ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. 3. 1,456 ÷ 43 = วิธีท�ำ ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 81

ฝ.๑.๓๖/ผ.๓๖ 4. 12,896 ÷ 52 = วธิ ีทำ� ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบนั ส่งเสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 82

ฝ.๑.๓๗/ผ.๓๗ แบบฝึกหัด 1.37 หาผลลัพธ์และตรวจสอบ ตวั อย่าง 14,065 ÷ 485 = .......3..4... )_..01._.04.._.00..26_..95._......................................................................................... วิธที �ำ . ..............................9..7..0.. ................4..8...5...×....2....ส..บิ...................................................... . ............................4..3..6..5.......................................................................................... . ............................4..3..6..5.. ................4..8...5...×....9....ห..น...่ว..ย................................................. . ..................................0.......................................................................................... ............................................................................................................................. .ต..ร..ว..จ..ส...อ..บ... ......4..8..5....×...2...9.. ..........=.. ..1..4...,.0..6..5.............................................................. .ด..งั..น...นั้ .. .............1..4..,.0..6...5...÷....4..8..5... ..=.. ..2..9...................................................................... ต อบ ............๒...๙................................................................................................... 1) 5,760 ÷ 240 = วิธีทำ� ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 83

ฝ.๑.๓๗/ผ.๓๗ 2) 13,265 ÷ 132 = วธิ ที ำ� ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. 3) 14,952 ÷ 356 = วิธที �ำ ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 84

ฝ.๑.๓๗/ผ.๓๗ 4) 50,185 ÷ 408 = วธิ ีท�ำ ................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ............................................................................................................................. ตอบ .................................................................................................................. สถาบันสง่ เสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 85

ฝ.๑.๓๘/ผ.๓๘ แบบฝึกหดั 1.38 หาจำ� นวนนับทีแ่ ทน 1. × 15 = 180 2. 43 × = 1,247 วธิ ีท�ำ เน่อื งจาก ................. = .............. วธิ ีทำ� เน่ืองจาก ................. = .............. แสดงว่า .................. = .............. แสดงว่า .................. = .............. จะได้ ....................... = .............. จะได้ ....................... = .............. ตรวจสอบ ................................... ตรวจสอบ ................................... จ�ำนวนนับท่แี ทน คอื ................. จำ� นวนนบั ทแี่ ทน คอื .................. ตอบ .................................... ตอบ .................................... 3. 130 × = 910 4. × 50 = 1,450 วิธที �ำ เนือ่ งจาก ................. = .............. วธิ ีทำ� เนื่องจาก ................. = .............. แสดงวา่ .................. = .............. แสดงว่า .................. = .............. จะได้ ....................... = .............. จะได้ ....................... = .............. ตรวจสอบ ................................... ตรวจสอบ ................................... จำ� นวนนับทแี่ ทน คอื ................. จ�ำนวนนับทแี่ ทน คอื .................. ตอบ .................................... ตอบ .................................... สถาบนั ส่งเสรมิ การสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 86

ฝ.๑.๓๙/ผ.๓๙ แบบฝกึ หัด 1.39 หาจ�ำนวนนบั แทน ตัวอยา่ ง 41 × ทมี่ ากกวา่ 410 ที่จะใกลเ้ คยี งกบั 410 มากที่สดุ วธิ ที �ำ ถ้า 41 × = 410 จะได้ = 410 ÷ 41 = 10 แสดงว่า 41 × 10 = 410 และ 41 × 11 มากกวา่ 410 จำ� นวนนับท่แี ทน คอื 11 ตอบ ๑๑ 1. 17 × ทมี่ ากกว่า 255 และ 2. × 8 ที่น้อยกว่า 496 และ ใกลเ้ คียงกับ 255 มากที่สดุ ใกล้เคยี งกบั 496 มากทสี่ ุด วธิ ที �ำ ถ้า .................. = .................. วธิ ีทำ� ถา้ .................. = .................. จะได้ .................. = .................. จะได ้ .................. = .................. .................. = .................. .................. = .................. แสดงว่า ...................................... แสดงว่า ...................................... .................................................... .................................................... จำ� นวนนบั ทแ่ี ทน คือ ................ จ�ำนวนนับทแ่ี ทน คือ ................ ตอบ ………………...........……… ตอบ ………………...........……… สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 87

ฝ.๑.๓๙/ผ.๓๙ 3. 70 × ที่มากกว่า 1,190 และ 4. × 61 ที่นอ้ ยกว่า 2,074 และ ใกลเ้ คียงกบั 1,190 มากท่สี ดุ ใกล้เคยี งกับ 2,074 มากทีส่ ุด วิธีท�ำ ถ้า .................. = .................. วิธีทำ� ถา้ .................. = .................. จะได ้ .................. = .................. จะได ้ .................. = .................. .................. = .................. .................. = .................. แสดงว่า ...................................... แสดงว่า ...................................... .................................................... .................................................... จำ� นวนนบั ที่แทน คือ ................ จำ� นวนนับทแ่ี ทน คอื ................ ตอบ ………………...........……… ตอบ ………………...........……… สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 88

ฝ.๑.๔๐/ผ.๔๐ แบบฝึกหัด 1.40 หาจ�ำนวนนบั ทีแ่ ทน ตัวอยา่ ง ÷ 33 = 13 1. 198 ÷ = 18 วิธที �ำ เนื่องจาก ÷ 33 = 13 วิธที ำ� เน่ืองจาก ..................................... จะได้ = 13 × 33 จะได้ ..................................... = 429 ..................................... จ�ำนวนนับท่ีแทน คือ 429 จ�ำนวนนับท่ีแทน คอื .......... ตอบ ๔๒๙ ตอบ .................................... 2. ÷ 42 = 10 3. 627 ÷ = 57 วิธที �ำ เนือ่ งจาก .................................... วธิ ที �ำ เนอื่ งจาก ..................................... จะได ้ ..................................... จะได้ ..................................... ..................................... ..................................... จำ� นวนนบั ทีแ่ ทน คือ .......... จำ� นวนนบั ที่แทน คอื .......... ตอบ .................................... ตอบ .................................... 4. ÷ 50 = 29 วธิ ีทำ� เนอ่ื งจาก .......................................... จะได้ ............................................. ............................................. จำ� นวนนบั ท่แี ทน คอื .............. ตอบ .................................... สถาบันส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 89

ฝ.๑.๔๑/ผ.๔๑ แบบฝึกหดั 1.41 นกั เรียนเตมิ ข้อความและตัวเลขแสดงจำ� นวนในชอ่ งวา่ ง 1) ครซู ้ือพดั ลมติดอาคารเรยี น 22 ตวั ราคาตวั ละ 1,150 บาท ครตู ้องใชเ้ งินท้ังหมเทา่ ใด 1. สิ่งทโี่ จทยถ์ ามอะไร ............................................................................................... 2. ส่งิ ท่โี จทยบ์ อกคอื อะไร .......................................................................................... ................................................................................................................................ 3. หาจำ� นวนเงนิ ทค่ี รูตอ้ งใช้เงนิ ทงั้ หมดอย่างไร ........................................................ ................................................................................................................................ 4. เขยี นเปน็ ประโยคสญั ลกั ษณไ์ ดอ้ ยา่ งไร ................................................................. 5. ครูต้องใช้เงินท้งั หมดเทา่ ใด ................................................................................... 6. ถ้านกั เรยี นใช้เครือ่ งคดิ เลขในการหาคำ� ตอบจะไดค้ ำ� ตอบเท่าไร ........................... 2) ครแู บ่งส้มทง้ั หมด 960 ผล ใหน้ กั เรยี น 80 คน คนละเทา่ ๆ กัน จะได้คนละก่ีผล 1. สิง่ ที่โจทยถ์ ามอะไร ............................................................................................... 2. สง่ิ ทีโ่ จทยบ์ อกคอื อะไร ......................................................................................... ................................................................................................................................ 3. หาจ�ำนวนสม้ ทีน่ กั เรยี นแต่ละคนจะได้รบั อย่างไร ................................................. ................................................................................................................................ 4. เขยี นเป็นประโยคสัญลักษณ์ไดอ้ ยา่ งไร ................................................................. 5. นักเรียนไดส้ ม้ คนละกีผ่ ล ....................................................................................... 6. ถ้านกั เรียนใช้เคร่ืองคิดเลขในการหาคำ� ตอบจะได้ค�ำตอบเท่าไร............................ สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 90

ฝ.๑.๔๒/ผ.๔๒ แบบฝึกหดั 1.42 เขียนเปน็ ประโยคสัญลักษณแ์ ละแสดงวิธที ำ� 1. ชาวสวนเกบ็ มะม่วง 1,750 กิโลกรมั นำ� มาจัดใส่เข่ง เขง่ ละ 25 กโิ ลกรมั จะไดก้ ีเ่ ขง่ ประโยคสัญลักษณ์ ..................................................................................................... วธิ ีท�ำ ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ตอบ ......................................................................................................................... 2. ออมสนิ เก็บเงินทกุ วนั วันละ 14 บาท เดือนธนั วาคมออมสนิ จะมเี งนิ ทั้งหมดกบ่ี าท ประโยคสัญลกั ษณ์ ..................................................................................................... วธิ ีท�ำ ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ตอบ ......................................................................................................................... สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 91

ฝ.๑.๔๓/ผ.๔๓ แบบฝึกหัด 1.43 เขียนเป็นประโยคสญั ลักษณ์และแสดงวธิ ีทำ� 1. โรงงานแหง่ หนง่ึ รบั เยบ็ เสอื้ ใหล้ กู คา้ จำ� นวนหนงึ่ โดยเยบ็ ไดว้ นั ละ 120 ตวั เปน็ เวลา 5 วนั โรงงานแห่งนเ้ี ยบ็ เสอ้ื ให้ลกู ค้าไดก้ ่ตี วั ประโยคสญั ลักษณ์ ..................................................................................................... วธิ ที �ำ ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ตอบ ......................................................................................................................... 2. ค รูมดี ินสอจ�ำนวนหนง่ึ แจกให้เด็กคนละ 6 แทง่ แจกใหเ้ ดก็ ไปท้งั หมด 170 คน ครมู ี ดนิ สอท้งั หมดก่แี ท่ง ประโยคสัญลกั ษณ์ ..................................................................................................... วธิ ที �ำ ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... ตอบ ......................................................................................................................... สถาบนั ส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 92

ฝ.๑.๔๔/ผ.๔๔ แบบฝกึ หดั 1.44 1. สร้างโจทยป์ ัญหาการคณู ท่ีกำ� หนดให้ พรอ้ มแสดงวธิ ที �ำ ................................................................................. ................................................................................. ................................................................................. ................................................................................. ................................................................................. ................................................................................. ตอบ ........................................................................ 2. สรา้ งโจทย์ปัญหาจากประโยคสัญลักษณ์ 1,480 ÷ 40 = พรอ้ มแสดงวธิ ที �ำ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ตอบ ............................................................................ 3. สร้างโจทย์ปัญหาการคณู ทม่ี คี �ำตอบ คือ 5,000 พร้อมแสดงวธิ ที �ำ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ตอบ ............................................................................ สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 93

ฝ.๑.๔๕/ผ.๔๕ แบบฝึกหดั 1.45 1. จงแสดงวธิ ที ำ� 1) (20,740 – 15,593) x 53 = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ 2) (91,467 + 35,495) ÷ 29 = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ สถาบันสง่ เสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 94

ฝ.๑.๔๕/ผ.๔๕ 3) 12,000 x (50,241 – 48,225) = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ 2. เตมิ เคร่อื งหมาย > หรือ < หรอื = ใน ใหถ้ ูกตอ้ ง 1) (639 × 74) + 41,860 (639 × 75) + 4,186 2) (561,729 - 61,729) × 45 (861,729 - 561,729) × 45 3) (1,568 ÷ 4) × 2 (1,568 × 4) ÷ 2 4) 54, 984 - (800 × 5) 64, 984 - (800 × 15) 5) (1,600 ÷ 4) × 20 (1,600 ÷ 40) × 2 สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.) 95

ฝ.๑.๔๖/ผ.๔๖ แบบฝกึ หดั 1.46 แสดงวธิ ีทำ� 1. (369 x 17) + (296 x 105) = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ 2. (375 x 76) – (64,480 ÷ 52) = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ สถาบนั ส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 96

ฝ.๑.๔๖/ผ.๔๖ 3. (120,750 + 18,462) – (232,092 ÷ 12) = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ 4. (405,840 + 122,541) – (21,340 x 18) = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ 5. (31,560 x 16) – (20,131 – 19,891) = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ สถาบนั ส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.) 97

ฝ.๑.๔๗/ผ.๔๗ แบบฝึกหัด 1.47 แสดงวิธที ำ� 1. 560,134 – 281,329 + 149,087 = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ 2. 520,837 + 1,465 – 192 – 219 = ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ สถาบนั สง่ เสรมิ การสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.) 98