Subtraction With Regrouping

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. It shows how many are left after some are taken away.

Front

What does regrouping mean in subtraction?

Back

Regrouping is when you rearrange numbers to make subtraction easier, especially when the top number is smaller than the bottom number in a column.

Front

How do you subtract 528 - 173?

Back

To subtract 528 - 173, you regroup the numbers: 8 cannot subtract 3, so you take 1 from the 2 (making it 1) and add 10 to the 8 (making it 18). Then, 18 - 3 = 15. Next, 1 - 7 cannot be done, so you take 1 from the 5 (making it 4) and add 10 to the 1 (making it 11). Then, 11 - 7 = 4. Finally, 4 - 1 = 3. The answer is 355.

Front

What is the result of 804 - 773?

Back

The result of 804 - 773 is 31.

Front

How do you subtract 90 - 56?

Back

To subtract 90 - 56, you can regroup: 0 cannot subtract 6, so you take 1 from the 9 (making it 8) and add 10 to the 0 (making it 10). Then, 10 - 6 = 4. Next, 8 - 5 = 3. The answer is 34.

Front

Hanna has 51 popsicles. If 27 melt, how many does she have left?

Back

Hanna has 51 - 27 = 24 popsicles left.

Front

What is 879 - 96?

Back

The result of 879 - 96 is 783.

Front

What is the first step in subtraction with regrouping?

Back

The first step is to look at the digits in each column, starting from the right.

Front

Why do we regroup in subtraction?

Back

We regroup in subtraction to make it possible to subtract when the top digit is smaller than the bottom digit.

Front

What is a common mistake in subtraction with regrouping?

Back

A common mistake is forgetting to regroup when needed, which can lead to incorrect answers.