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, 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 70 - 16?

Back

54

Front

What is the result of 647 - 415?

Back

232

Front

What is the result of 360 - 254?

Back

106

Front

What is the result of 961 - 436?

Back

525

Front

If you have 323 postcards and use 125, how many are left?

Back

198 postcards

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

What is the first step in subtracting 254 from 360?

Back

Check if you can subtract each column without regrouping; if not, borrow 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 the correct digits from each other.