Subtraction with Regrouping

Front

What is subtraction with regrouping?

Back

Subtraction with regrouping is a method used to subtract numbers when the top digit is smaller than the bottom digit in any column, requiring you to borrow from the next column.

Front

How do you borrow in subtraction?

Back

To borrow, you take 1 from the next left column, reducing it by 1, and add 10 to the current column to make it easier to subtract.

Front

What is the result of 1,630 - 547?

Back

1,083

Front

What is the result of 67 - 38?

Back

29

Front

What is the result of 738 - 259?

Back

479

Front

What is the result of 55 - 46?

Back

9

Front

What is the result of 155 - 63?

Back

92

Front

When do you need to regroup in subtraction?

Back

You need to regroup when the digit in the top number is smaller than the digit in the bottom number in any column.

Front

What is the first step in subtracting 1,630 - 547?

Back

Look at the rightmost column (units) and see if you can subtract without regrouping.

Front

What do you do if you cannot subtract without regrouping?

Back

You borrow from the next column to the left, making the current column easier to subtract.