Addition and Subtraction with Regrouping

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What does regrouping mean in addition?

Back

Regrouping in addition means carrying over a value from one column to the next when the sum exceeds 10.

Front

What does regrouping mean in subtraction?

Back

Regrouping in subtraction means borrowing from the next column when the top number is smaller than the bottom number.

Front

How do you add two numbers with regrouping?

Back

1. Add the digits in the rightmost column. 2. If the sum is 10 or more, carry over to the next column. 3. Repeat for all columns.

Front

How do you subtract two numbers with regrouping?

Back

1. Start from the rightmost column. 2. If the top digit is smaller, borrow from the next column. 3. Subtract the digits.

Front

What is the sum of 282 and 239?

Back

The sum is 521.

Front

What is 456 minus 268?

Back

The answer is 188.

Front

If a trip is 120 miles and 51 miles have been traveled, how many miles are left?

Back

There are 69 miles left.

Front

What is 571 minus 152?

Back

The answer is 419.