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 us 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 900 - 749?

Back

151

Front

What is the result of 879 - 96?

Back

783

Front

What is the result of 456 - 268?

Back

188

Front

What is the result of 231 - 178?

Back

53

Front

What is the result of 804 - 773?

Back

31

Front

What do you do if you need to subtract a larger digit from a smaller digit in a column?

Back

You need to borrow from the next column to the left.

Front

What is the first step in solving a subtraction problem with regrouping?

Back

Identify if any digits in the top number are smaller than the corresponding digits in the bottom number.

Front

Can you give an example of a subtraction problem that requires regrouping?

Back

Yes, 52 - 27 requires regrouping because you cannot subtract 7 from 2.