20) A toffee box has 68 toffees in it. How many toffees would be there in 9 such boxes? Solution: Higher Order Thinking Skills (H.O.T.S.) Short Answer Question 21) Write two multiplication facts for 84. Solution: Long Answer Question 22) Frame a word problem for the following and solve it. Number of apples in one carton = 5 Number of cartons = 8 Solution: Multiplication 47 Hazelwood_Maths_G03_WB_Part 1.indb 47 06-08-2023 01:19:31
Concept 6.2: Multiply 3-digit Numbers by 1-digit and 2-digit Numbers Recall Multiple Choice Questions (D) 207 [] 1) The product of 90 and 3 is _____________. (D) 52 [] (A) 2700 (B) 702 (C) 270 (D) 80 [] 2) 52 × 1 = _____________ (A) 53 (B) 521 (C) 51 [] 3) The product of 20 and 4 is _____________. [] (A) 70 (B) 90 (C) 60 [] & Remembering and Understanding Multiple Choice Questions 4) The product of 302 and 1 is _____________. (A) 320 (B) 302 (C) 1 (D) 0 (D) 450 5) The product of 200 and 2 is _____________. (D) 222 (A) 400 (B) 200 (C) 2 6) The product of 111 and 2 is _____________. (A) 111 (B) 221 (C) 212 48 06-08-2023 01:19:31 Hazelwood_Maths_G03_WB_Part 1.indb 48
Fill in the Blanks 7) The product of 70 and 6 is ____________. 8) The product of 800 and 4 is ____________. 9) The product of 301 by 3 is ____________. Very Short Answer Questions 10) What is the product of 222 and 2? Solution: 11) What is the product of 121 and 2? Solution: 12) Find the product of 333 and 3. Solution: Short Answer Questions 13) What is the product of 999 and 3? Solution: 14) What is the product of 893 and 4? Solution: Multiplication 49 Hazelwood_Maths_G03_WB_Part 1.indb 49 06-08-2023 01:19:31
Long Answer Questions b) 234 × 21 15) Solve: a) 422 × 15 Solution: 16) Solve: a) 373 × 24 b) 465 × 18 Solution: 50 06-08-2023 01:19:31 Hazelwood_Maths_G03_WB_Part 1.indb 50
Application Short Answer Questions 17) A pencil box has 154 pencils in it. How many pencils would be there in 4 such boxes? Solution: 18) One sheet of chart paper has 371 words. How many words would be there on 3 such sheets of chart paper? Solution: Long Answer Questions 19) Ajay keeps 675 stamps in a box. If he has the same number of stamps in 13 such boxes, how many stamps does he have in all? Solution: Multiplication 51 Hazelwood_Maths_G03_WB_Part 1.indb 51 06-08-2023 01:19:31
20) A container can hold 720 spoons. How many spoons can be kept in 12 such containers? Solution: Higher Order Thinking Skills (H.O.T.S.) Short Answer Question b) 4 and 100 21) Multiply: a) 23 and 10 Solution: Long Answer Question 22) Which two numbers are such that their difference is 2 and their product is 2 less than 50? Solution: 52 06-08-2023 01:19:31 Hazelwood_Maths_G03_WB_Part 1.indb 52
6.3: Double 2-digit and 3-digit Numbers Mentally Try It Out It’s a rapid-fire game! Split into four teams. Ask a volunteer to read out the questions from the following table, one for each round. 1) 5 × 2 = _____ [Team __ ] 2) 4 × 2 = _____ [Team __] 3) 6 × 2 = _____ [Team __ ] 4) 21 × 2 = _____ [Team __ ] 5) 40 × 2 = _____ [Team __ ] 6) 50 × 2 = _____ [Team __ ] One member from each team comes in front to answer the round and score for their team. The team scores 10 points if its member is the first to answer correctly. The game continues with a new member from each team for the next round, till all the questions have been answered. You can record the answers on the board and the team which scores the points in each round, as shown in the table above. Now I Can Answer 1) 21 × 2 = ___________. (A) 40 (B) 41 (C) 42 (D) 44 2) 40 × 2 = ___________. (A) 40 (B) 402 (C) 420 (D) 80 3) 50 × 2 = _____. (A) 200 (B) 100 (C) 150 (D) 250 4) The number 50 is double of ________. 5) The number 80 is double of ________. Multiplication 53 Hazelwood_Maths_G03_WB_Part 1.indb 53 06-08-2023 01:19:32
6) The number 70 is double of ________. 7) Double the number 20. 8) Double the number 60. 9) Double the number 30. Do It Yourself Do you now think you can double three-digit numbers as well? Try these. Double the given numbers: 1) 570 2) 530 3) 172 Doubling is used in many situations in our day-to-day activities, such as mentally calculating time, distance, money to be paid in a departmental store, the area of a room and so on. Actively engage in these scenarios and help your parents with the calculations. Practice Questions 1) What is the product of 6 and 10? 2) Multiply: a) 2 and 9 b) 4 and 6 c) 5 and 4 3) There are eggs in 8 boxes. If each box has 320 eggs, how many eggs are there in all? 4) What is the multiplier if 5 × 9 = 45? 5) Find the product when 43 is multiplied by 6. 6) Solve: a) 19 × 9 b) 23 × 4 c) 12 × 6 7) What is the product when 87 is multiplied by 3? 54 Hazelwood_Maths_G03_WB_Part 1.indb 54 06-08-2023 01:19:33
8) Multiply: a) 54 by 7 b) 33 by 6 c) 42 by 7 9) Rajesh eats 3 meals in a day. How many meals does he eat in 15 days? 10) Double 14 mentally. 11) On a dinner table, each family member had 2 plates. If there were 19 members, how many plates were arranged in all? 12) What is the product of 304 and 2? 13) A photography team had 32 members. Each of them clicked 9 photographs. How many photographs were clicked in all? 14) Each reading club has 75 books. If there are 8 such clubs, how many total number of books are there? 15) Multiply: a) 220 and 3 b) 401 and 2 c) 313 and 3 16) Solve: a) 104 × 2 b) 212 × 3 c) 467 × 1 17) 15 children were eating pizza. Each child ate 2 pieces. How many pieces of pizza were there? 18) Find the product of: a) 294 and 3 b) 128 and 4 c) 224 and 2 19) What is the product of: a) 192 and 5 b) 200 and 3 c) 347 and 4 20) Solve: a) 598 × 14 b) 464 × 12 c) 623 × 18 21) What is the product of 538 and 16? 22) Multiply: a) 432 and 19 b) 573 and 12 c) 296 and 15 23) There are 125 beans in each jelly bean packet. How many jelly beans are there in 8 such packets? 24) What is the multiplicand if 4 × 2 = 8? 25) Nilesh reads a book of 290 pages in a month. How many pages can he read in 8 months? 26) Double the number 3 mentally. 27) What is the double of 32? Solve mentally. 28) Find the product of 100 and 1. 29) Find the double of 22 mentally. 30) Seeta painted 19 pages. If Nargis painted double the number of pages that Seeta painted, how many pages did Nargis paint? Multiplication 55 Hazelwood_Maths_G03_WB_Part 1.indb 55 06-08-2023 01:19:33
Student Reflection Come to this page after you complete a chapter. Choose the smiley that shows how well you have understood the chapter. Shapes Patterns Very clear Clear Somewhat clear Not clear at all Very clear Clear Somewhat clear Not clear at all I need help with ..........………………...............……… I need help with ..........………………...............……… ...................................................................................... ...................................................................................... What I liked about this chapter ............................... What I liked about this chapter ............................... …………………………………………............................ …………………………………………............................ Numbers Addition Very clear Clear Somewhat clear Not clear at all Very clear Clear Somewhat clear Not clear at all I need help with ..........………………...............……… I need help with ..........………………...............……… ...................................................................................... ...................................................................................... What I liked about this chapter ............................... What I liked about this chapter ............................... …………………………………………............................ …………………………………………............................ Subtraction Multiplication Very clear Clear Somewhat clear Not clear at all Very clear Clear Somewhat clear Not clear at all I need help with ..........………………...............……… I need help with ..........………………...............……… ...................................................................................... ...................................................................................... What I liked about this chapter ............................... What I liked about this chapter ............................... …………………………………………............................ …………………………………………............................ 56 06-08-2023 01:19:33 Hazelwood_Maths_G03_WB_Part 1.indb 56
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