2 digit subtraction with regrouping

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is when you borrow from the next higher place value to help subtract when the top digit is smaller than the bottom digit.

Front

What is the first step in 2-digit subtraction with regrouping?

Back

The first step is to check if you need to regroup. If the top digit is smaller than the bottom digit in any column, you will need to regroup.

Front

Solve: 65 - 41

Back

24

Front

Solve: 72 - 42

Back

30

Front

Solve: 75 - 36

Back

39

Front

Solve: 64 - 44

Back

20

Front

Solve: 36 - 18

Back

18

Front

What do you do if the top digit is smaller than the bottom digit in the ones place?

Back

You borrow 1 from the tens place, which makes the top digit in the tens place one less and adds 10 to the ones place.

Front

What is the result of 10 - 7?

Back

3

Front

What is the result of 20 - 15?

Back

5