Subtraction with Base 10 Models

Created by Jamie Unverzagt

Tens Ones

62- 8

Let’s start with 62 and then take away 8.

Tens Ones

62- 8

62 is 6 tens and 2 ones.

Tens Ones

62- 8

Can you take away 8 ones?

Tens Ones

62- 8

How can you get more ones?

Tens Ones

62- 8

How many tens and ones do you have now?

5 12

Tens Ones

62- 8

Now can you take away 8 ones?

5 12

How many ones are left?

4

Tens Ones

62- 8

5 12

How many tens are left?

45

Tens Ones

41- 13

41 is 4 tens and 1 one.

Tens Ones

41- 13

Can you take away 3 ones?

Tens Ones

41- 13

How can you get more ones?

Tens Ones

41- 13

How many tens do you have now?

3

Tens Ones

41- 13

How many ones do you have now?

3 11

YouYou had 1had 1 one and you got 10 moregot 10 more.

Tens Ones

41- 13

3 11

Do you still have 41 total? Explain.Do you still have 41 total? Explain.

10 20 30

31 32 33 34 35 36 37 38 39 40

41

Tens Ones

41- 13

3 11

YES!YES! When you regroup, you still have When you regroup, you still have the same amount. You just show it a the same amount. You just show it a different way!different way!

10 20 30

31 32 33 34 35 36 37 38 39 40

41

Tens Ones

41- 13

Now can you take away 3 ones?

3 11

How many ones are left?

8

Tens Ones

41- 13

3 11

Can you take away 1 ten?

8

Tens Ones

41- 13

3 11

How many tens are left?

82

Tens Ones 24- 5

1 14Now Try This:

91

Excellent Job!

Tens Ones 30- 12

2 10Now Try This:

8

You’ve Got It!

1

Math Journal Topic:

Explain how to solve 53 – 9 using pictures, numbers, and words. Will you have to regroup? Why or why not?