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 left column.

Front

How do you perform subtraction with regrouping?

Back

1. Start from the rightmost column. 2. If the top digit is smaller than the bottom digit, borrow from the next column to the left. 3. Subtract the digits in each column, moving left.

Front

What is the result of 641 - 368?

Back

273

Front

What is the result of 1,630 - 547?

Back

1,083

Front

What is the result of 55 - 46?

Back

9

Front

What is the result of 517 - 135?

Back

382

Front

What is the result of 922 - 355?

Back

567

Front

What does it mean to 'borrow' in subtraction?

Back

To 'borrow' means to take 1 from the next left column to make the current column's top digit larger, allowing for subtraction when the top digit is smaller.

Front

Why is it important to line up numbers by place value when subtracting?

Back

Lining up numbers by place value ensures that each digit is subtracted from the correct corresponding digit, maintaining the accuracy of the operation.

Front

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

Back

The first step is to line up the numbers by their place values (ones, tens, hundreds, etc.).