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 place value, requiring us to borrow from the next higher place value.

Front

When subtracting, which place value do we start from?

Back

We start from the rightmost place value, which is the ones place.

Front

What do we do if the top digit is smaller than the bottom digit in subtraction?

Back

We borrow 1 from the next higher place value.

Front

What is the result of 528 - 173?

Back

355

Front

If Fred baked 45 cookies and then 28 more, how many cookies did he bake in total?

Back

73 cookies (45 + 28).

Front

If Fred ate 15 cookies from 73, how many cookies does he have left?

Back

58 cookies (73 - 15).

Front

What is 803 - 458?

Back

345

Front

If Beth had 34 bouncy balls left after giving Sam 28, how many did she have to start with?

Back

62 bouncy balls (34 + 28).

Front

What is the first step in subtraction with regrouping?

Back

Identify if you need to borrow from the next place value.

Front

What does it mean to 'borrow' in subtraction?

Back

To 'borrow' means to take 1 from the next higher place value to help subtract.