Step-by-step Maths Level 3: Ten tens make one hundred

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 375. The hundreds digit tells us how many hundreds.
   The hundreds digit is 3
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   375 is 3 hundreds and 75 more
3. Write the answer. This is the number of whole hundreds.
   3

Check. 3 hundreds is 300, which is the start of 375.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 619. The hundreds digit tells us how many hundreds.
   The hundreds digit is 6
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   619 is 6 hundreds and 19 more
3. Write the answer. This is the number of whole hundreds.
   6

Check. 6 hundreds is 600, which is the start of 619.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 105. The hundreds digit tells us how many hundreds.
   The hundreds digit is 1
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   105 is 1 hundreds and 5 more
3. Write the answer. This is the number of whole hundreds.
   1

Check. 1 hundreds is 100, which is the start of 105.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 632. The hundreds digit tells us how many hundreds.
   The hundreds digit is 6
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   632 is 6 hundreds and 32 more
3. Write the answer. This is the number of whole hundreds.
   6

Check. 6 hundreds is 600, which is the start of 632.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 634. The hundreds digit tells us how many hundreds.
   The hundreds digit is 6
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   634 is 6 hundreds and 34 more
3. Write the answer. This is the number of whole hundreds.
   6

Check. 6 hundreds is 600, which is the start of 634.

Watch out. Count the hundreds digit, not the whole number.

Method. Count how many hundreds there are, then count ten tens in each.

1. Think of 300 as hundreds. 300 is 3 hundreds.
   300 = 3 hundreds
2. Each hundred has ten tens. One hundred is the same as ten tens.
   3 x 10 = 30
3. Write the answer.
   30

Check. Check: 30 tens is 300, because 3 hundreds is 300.

Watch out. One hundred is ten tens. Multiply the hundreds by 10 to find the tens.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 370. The hundreds digit tells us how many hundreds.
   The hundreds digit is 3
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   370 is 3 hundreds and 70 more
3. Write the answer. This is the number of whole hundreds.
   3

Check. 3 hundreds is 300, which is the start of 370.

Watch out. Count the hundreds digit, not the whole number.

Method. Count how many hundreds there are, then count ten tens in each.

1. Think of 800 as hundreds. 800 is 8 hundreds.
   800 = 8 hundreds
2. Each hundred has ten tens. One hundred is the same as ten tens.
   8 x 10 = 80
3. Write the answer.
   80

Check. Check: 80 tens is 800, because 8 hundreds is 800.

Watch out. One hundred is ten tens. Multiply the hundreds by 10 to find the tens.

Method. Count how many hundreds there are, then count ten tens in each.

1. Think of 500 as hundreds. 500 is 5 hundreds.
   500 = 5 hundreds
2. Each hundred has ten tens. One hundred is the same as ten tens.
   5 x 10 = 50
3. Write the answer.
   50

Check. Check: 50 tens is 500, because 5 hundreds is 500.

Watch out. One hundred is ten tens. Multiply the hundreds by 10 to find the tens.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 426. The hundreds digit tells us how many hundreds.
   The hundreds digit is 4
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   426 is 4 hundreds and 26 more
3. Write the answer. This is the number of whole hundreds.
   4

Check. 4 hundreds is 400, which is the start of 426.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 449. The hundreds digit tells us how many hundreds.
   The hundreds digit is 4
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   449 is 4 hundreds and 49 more
3. Write the answer. This is the number of whole hundreds.
   4

Check. 4 hundreds is 400, which is the start of 449.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 322. The hundreds digit tells us how many hundreds.
   The hundreds digit is 3
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   322 is 3 hundreds and 22 more
3. Write the answer. This is the number of whole hundreds.
   3

Check. 3 hundreds is 300, which is the start of 322.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 839. The hundreds digit tells us how many hundreds.
   The hundreds digit is 8
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   839 is 8 hundreds and 39 more
3. Write the answer. This is the number of whole hundreds.
   8

Check. 8 hundreds is 800, which is the start of 839.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 409. The hundreds digit tells us how many hundreds.
   The hundreds digit is 4
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   409 is 4 hundreds and 9 more
3. Write the answer. This is the number of whole hundreds.
   4

Check. 4 hundreds is 400, which is the start of 409.

Watch out. Count the hundreds digit, not the whole number.

Method. The hundreds digit tells us how many whole hundreds there are.

1. Look at the hundreds digit in 603. The hundreds digit tells us how many hundreds.
   The hundreds digit is 6
2. Count the whole hundreds. The tens and ones are not whole hundreds, so we leave them out.
   603 is 6 hundreds and 3 more
3. Write the answer. This is the number of whole hundreds.
   6

Check. 6 hundreds is 600, which is the start of 603.

Watch out. Count the hundreds digit, not the whole number.

Method. Count how many hundreds there are, then count ten tens in each.

1. Think of 200 as hundreds. 200 is 2 hundreds.
   200 = 2 hundreds
2. Each hundred has ten tens. One hundred is the same as ten tens.
   2 x 10 = 20
3. Write the answer.
   20

Check. Check: 20 tens is 200, because 2 hundreds is 200.

Watch out. One hundred is ten tens. Multiply the hundreds by 10 to find the tens.