Adding and Subtracting Multi Digit Numbers (regrouping)

Front

What is regrouping in addition?

Back

Regrouping in addition is when you carry over a value from one column to the next when the sum of a column exceeds 10.

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is when you borrow from the next column when the top number is smaller than the bottom number.

Front

152 + 175 = ?

Back

327

Front

569 - 177 = ?

Back

392

Front

95 - 37 = ?

Back

58

Front

481 + 647 = ?

Back

1,128

Front

743 - 187 = ?

Back

556

Front

What do you do when adding two-digit numbers and the sum is greater than 9?

Back

You regroup by carrying over to the next left column.

Front

What do you do when subtracting and the top number is smaller than the bottom number?

Back

You regroup by borrowing from the next left column.

Front

What is the sum of 20 and 15?

Back

35