Regrouping (subtraction)

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is the process of borrowing from a higher place value when the top digit is smaller than the bottom digit in a subtraction problem.

Front

How do you subtract two-digit numbers with regrouping?

Back

To subtract two-digit numbers with regrouping, start from the rightmost digit. If the top digit is smaller than the bottom digit, borrow from the next left digit, reducing it by one and adding ten to the current digit.

Front

What is the result of 24 - 16?

Back

The result of 24 - 16 is 8.

Front

What is the result of 75 - 24?

Back

The result of 75 - 24 is 51.

Front

What is the result of 71 - 45?

Back

The result of 71 - 45 is 26.

Front

What is the result of 74 - 23?

Back

The result of 74 - 23 is 51.

Front

What is the result of 36 - 19?

Back

The result of 36 - 19 is 17.

Front

When do you need to regroup in subtraction?

Back

You need to regroup in subtraction when the digit in the minuend (top number) is smaller than the digit in the subtrahend (bottom number) in any place value.

Front

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

Back

The first step is to look at the rightmost digits and determine if regrouping is necessary.

Front

Explain the borrowing process in regrouping.

Back

The borrowing process involves taking 1 from the next left digit, reducing it by one, and adding 10 to the current digit to make it larger for subtraction.