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 879 - 96?

Back

783

Front

What is the result of 502 - 297?

Back

205

Front

What is the result of 571 - 152?

Back

419

Front

What is the result of 804 - 773?

Back

31

Front

What is the result of 231 - 178?

Back

53

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 879 - 96?

Back

Look at the ones column: 9 is larger than 0, so you need to regroup.

Front

What do you do if you can't borrow from the next column?

Back

If you can't borrow, you continue to the next column to the left until you find a digit that can be reduced.