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 you to borrow from the next column.

Front

How do you borrow in subtraction?

Back

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

Front

What is the result of 905 - 335?

Back

570

Front

What is 35 - 26?

Back

9

Front

What is 803 - 458?

Back

345

Front

If there are 323 postcards and 125 are used, how many are left?

Back

198 postcards

Front

What is 74 - 23?

Back

51

Front

What does the term 'regrouping' mean in subtraction?

Back

Regrouping means rearranging numbers to make subtraction easier, often involving borrowing from the next column.

Front

Why is it important to line up numbers by place value in subtraction?

Back

Lining up numbers by place value ensures that you subtract digits from the correct columns, which is essential for accurate calculations.

Front

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

Back

The first step is to check if you need to borrow from the next column by comparing the digits in each column.