Chapter-1-Four digit and Five digit numbers

1 Four & Five digit numbers Let’s Learn  Review : two & three digit numbers  Abacus on three-digit numbers  Four-digit numbers  Abacus on Four-digit numbers  Five-digit numbers  Face value and Place value  Successor and Predecessor  Additional exercise, Hots and Maths lab activity Review : two digit numbers 1 block = 1 one Group of ten blocks = 1 ten How many tens and ones are in 53?

53 5 tens 3 ones There are 5 tens. They represent 50 blocks. There are 3 ones. They represent 3 blocks. 53 = 5 tens 3 ones 53 = 50 + 3 Exercise - 1 A) Count the blocks. Write tens and ones. Blocks Tens ones

B) Write the number of tens and ones. 42 = tens ones 84 = tens ones 30 = tens ones 35 = tens ones 78 = tens ones 65 = tens ones C) Write tens and ones. 1. 63 = + 2. 21 = + 3. 78 = + 4. 57 = + 5. 84 = + Look at this example. 47 4 tens 7 ones 4 tens 7 ones = 47

Exercise - 2 Read tens and ones. Write the number. 5 tens 3 ones = 6 tens 2 ones = 7 tens 4 ones = 4 tens 9 ones = 8 tens 5 ones = 2 tens 7 ones = Review : three digit numbers  Ten tens added together equal one hundred.  How many Hundreds, tens and ones are in 146?

146 1 hundred 6 ones 4 tens There is 1 hundred, 4 tens and 6 ones in 146. 146 = 1 hundred 4 tens and 6 ones Exercise - 3 A) Write the number of hundreds, tens and ones. 186 = hundred tens ones 519 = hundreds tens ones 365 = hundreds tens ones 430 = hundreds tens ones B) Count and write hundreds, tens and ones. Blocks Hundreds Tens Ones

Expanded Form and Short Form. How many hundreds, tens and ones are in 156? 156 1 hundred 6 ones 5 tens There are 1 hundred, 5 tens, and 6 ones in 156. Short form  156 = 100 + 50 + 6  Expanded form C) Write separately hundreds, tens and ones. 348 = + + 491 = + + 582 = + + 197 = + +

395 = + + 485 = + + Jack has 3 coins. The number on the coin shows it’s face value. 1 One 10 Ten 100 Hundred Look at this example 125 1 hundred 2 tens 5 ones 111 100 10 10 11 1 hundred 2 tens 5 ones = 125

Exercise - 4 A) Count hundreds, tens and ones. Write the number. Coins Hundreds Tens Ones Numbers 100 100 100 10 10 1 3 21 321 100 100 10 10 1 1 1 100 100 100 10 1 1 100 10 10 10 1 1 100 100 100 10 10 10 1 1 1 100 100 10 10 1 1

Abacus on three-digit numbers HTO Here is shown an abacus with 3 sticks. Each stick has some beads in it. 123 Starting from the left, the numbers of beads show the numbers of hundreds, tens and ones. The abacus on the left shows 123 which is read as ones hundred and twenty three. Exercise - 5 HTO Count the beads and write the numbers. HTO HTO HTO 546 HTO HTO HTO HTO

4-digit numbers Jack has 10 coins of one hundred each. 100 = 1 hundred Group of 10 hundreds = 1 Thousand 100 100 100 100 100 = 1 Thousand 1000 100 100 100 100 100 2349 2 thousands 9 ones 3 hundreds 4 tens 2349 = 2 thousands 3 hundreds 4 tens 9 ones Write the number of thousands, hundreds, tens and ones. Thousands Hundreds Tens Ones 2917 2 9 1 7 4625 5834 6831 8743

1000 100 100 100 10 10 11 3 Hundreds 11 1 thousand 10 10 11 6 ones 4 tens 1346 1 thousand 3 Hundreds 4 tens 6 ones = 1346 Exercise - 6 A) Read thousands, hundreds, tens and ones. Write the number. 1. 2 Thousands 5 hundreds 7 tens 9 ones = 2. 3 Thousands 6 hundreds 5 tens 2 ones = 3. 5 Thousands 7 hundreds 8 tens 1 one = 4. 4 Thousands 9 hundreds 2 tens 3 ones = 5. 6 Thousands 2 hundreds 3 tens 9 ones = 6. 5 Thousands 4 hundreds 2 tens 8 ones = B) Look at the coins and write the number. Thousands Hundreds Tens Ones 1000 1000 100 10 1 1 1000 10 1 1 The number is .

Thousands Hundreds Tens Ones 10 10 1000 1000 100 100 100 10 10 11 1 11 The number is . Tens Ones Thousands Hundreds 10 11 1000 100 100 100 100 The number is . Abacus on four-digit numbers 1 Th H T O 2 Th H T O 1234 54 68 Here is shown an abacus with 3 sticks. Each stick has some beads in it. Starting from the left, the numbers of beads show the numbers of Thou- sands, Hundreds, Tens and Ones. In the 1st example, the abacus from the left shows 1234 which is read as one thousand and two hundred and thirty four; and in the 2nd example, the abacus from the left shows 5468 which is read as five thousand and four hundred and sixty eight.

Exercise - 7 Th H T O Count the beads and write the numbers. Th H T O Th H T O Th H T O Th H T O Th H T O Th H T O Th H T O Th H T O

5-digit numbers Sara has 10 coins of one thousand each. 1000 = 1 Thousand Group of 10 Thousands = 10 Thousand 1000 1000 1000 1000 1000 = 10 Thousand 10000 1000 1000 1000 1000 1000 13475 1 = Ten thousand, 3 = Thousands, 4 = Hundreds, 7 = Tens, 5 = Ones Exercise - 8 Tens Ones Look at the number and complete the table. Ten Thousands Thousands Hundreds 14, 357 21, 795 45, 678 19, 276

Face Value and Place Value Face Value The face value of a digit is the value of the digit itself at whatever place it may be. For example: In number 6521, the face value of 1 is 1, 2 is 2, 5 is 5 and 6 is 6. Place Value The place value of each digit in a number depends upon its place in the number. Thousands Hundreds Tens Ones Places Symbols Th H T O Values 1000 100 10 1 We use place value to read and write numbers in words. 8,931 Eight thousand, nine hundred and thirty one. 21,573 Twenty one thousand, five hundred and seventy three. 13,801 Thirteen thousand and eight hundred and one. Exercise - 9 A) Read the number and write in terms of words. 10,583 4,192 13,741

10,313 24,192 39,053 B) Read the words and write in number. Eight thousand, nine hundred and thirty one. Thirty one thousand, five hundred and sixty three. Forty one thousand, five hundred and Thirty four. Seventy thousand, Six hundred and fifty five. Eighty thousand, nine hundred and thirty one. Successor and Predecessor Successor The number which comes just after a given number is called its successor. It is obtained by adding 1 to the given number. For example: 5000 is the successor of 4999. Predecessor The number which comes just before a given number is called its predeces- sor. It is obtained by subtracting 1 from the given number. For example: 8999 is the predecessor of 9000.

Exercise - 10 A) Write the place value of each digit in the given numbers: (a) 7891 (b) 7651 (c) 9137 (d) 4531 (e) 4224 (f) 1237 (g) 9264 (h) 3682 (i) 2581 B) Write the place value of each digit in the given numbers: 0 (a) 5 6 9 1 1 (b) 8 (c) 40 600 90 10 1000 600 600 5000 8000 (d) 0 (e) 9 (f) 1 10 90 90 800 2000 300 900 4000 9000 C) Write the face value and place value of the coloured digits in the following numbers: (a) 6123 (b) 9431 (c) 3795 (d) 2943 (e) 4294 (f) 2649 (g) 1057 (h) 3972

D) Write the successor of each of the following numbers: (a) 4699 (b) 3549 (c) 7620 (d) 3322 (e) 3649 (f) 6245 (g) 3386 (h) 2596 E) Write the predecessor of each of the following numbers: (a) 1375 (b) 7298 (c) 4952 (d) 4999 2645 (e) 4962 (f) 3656 (g) 2189 (h) Additional Exercise A) Tick () the correct option. 1. 2 Thousands, 5 Hundreds, 7 tens and 9 ones = a) 2439 b) 2579 c) 3759 d) 7259 2. How many thousands are ten thousand? a) ten b) hundred c) ones d) thousand 3. How much is a hundred thousand? a) 1000 b) 10000 c) 100000 d) 10 4. The greatest 4-digit number is : a) 1000 b) 8999 c) 9999 d) 9000 5. Three thousands, seven hundreds, five tens and nine ones = a) 2439 b) 2579 c) 3759 d) 7259

B) Draw beads on the abacus to represent the following numbers : HTO HTO HTO HTO 543 933 123 871 C) Write the following numbers in words: (a) 8103 (b) 6040 (c) 2619 (d) 9001 D) Write the number for each of the following : (a) Eight thousand and four (b) Seven thousand, nine hundred and nine (c) Four thousand and two hundred (d) Nine thousand, three hundred and thirty-nine E) Write the place, place value and face value of the coloured digit in each of the following: Numbers Place Place value Face value 2841 7602 9001 5432

HOTs (do it yourself) 1. What will be the conclusion of comparing any number to its succes- sor? 2. How many 4-digit numbers can be obtained by rearranging the digits of one thousand one? 3. Tyler was asked to write the expanded form of 1000. Only 1000 was his answer. Is that correct? If so, why? Maths Lab Activity: Toss it! Materials: 2-4 players 10 Popsicle sticks per group (one side with 10 dots in two groups of 5 and the other side with 1 dot) 1 Recording Sheet per student How to play? 1. Students take the 10 sticks and drop them on the playing surface. 2. Students group the sticks by tens and ones in the format of a tally. 3. Next, they record the number of tens and ones that they see as a tally on the table. 4. Then they write the amount of each group on the blanks under the table. 5. They may also write an equation such as 30 + 7 = 37 under the words.

one side other side Toss it! Tens Ones Tens Ones tens and ones = tens and ones = Tens Ones Tens Ones tens and ones = tens and ones = Tens Ones Tens Ones tens and ones = tens and ones =

Tens Ones Tens Ones tens and ones = tens and ones = Tens Ones Tens Ones tens and ones = tens and ones = Tens Ones Tens Ones tens and ones = tens and ones = Tens Ones Tens Ones tens and ones = tens and ones =