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 borrowing from the next column.

Front

How do you borrow in subtraction?

Back

To borrow, you take 1 from the next left column, decrease that digit by 1, and add 10 to the current column's top digit.

Front

What is the first step in solving 436 - 89?

Back

The first step is to look at the ones column: 6 - 9. Since 6 is smaller than 9, you need to borrow from the tens column.

Front

What do you do after borrowing in subtraction?

Back

After borrowing, you adjust the digits: decrease the tens digit by 1 and add 10 to the ones digit, then perform the subtraction.

Front

Solve: 436 - 89. What is the answer?

Back

The answer is 347.

Front

Solve: 324 - 141. What is the answer?

Back

The answer is 183.

Front

Solve: 517 - 135. What is the answer?

Back

The answer is 382.

Front

Solve: 55 - 46. What is the answer?

Back

The answer is 9.

Front

Solve: 738 - 259. What is the answer?

Back

The answer is 479.

Front

What is the purpose of regrouping in subtraction?

Back

Regrouping allows you to perform subtraction when the top digit is smaller than the bottom digit, ensuring accurate calculations.