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 to the next column 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

63 + 25 = ?

Back

88

Front

93 - 27 = ?

Back

66

Front

47 + 16 = ?

Back

63

Front

23 + 48 = ?

Back

71

Front

92 - 89 = ?

Back

3

Front

What is a sum?

Back

A sum is the result of adding two or more numbers together.