Addition and Subtraction Fact Families

Front

What is an addition fact family?

Back

An addition fact family is a group of related addition and subtraction facts that use the same numbers. For example, if you have 2, 3, and 5, the facts are: 2 + 3 = 5, 3 + 2 = 5, 5 - 2 = 3, and 5 - 3 = 2.

Front

What is a subtraction fact family?

Back

A subtraction fact family is a group of related subtraction and addition facts that use the same numbers. For example, if you have 4, 1, and 3, the facts are: 4 - 1 = 3, 1 + 3 = 4, 3 + 1 = 4, and 3 = 4 - 1.

Front

What is the related subtraction fact for 11 + 6 = 17?

Back

17 - 6 = 11.

Front

What is the related addition fact for 6 - 2 = 4?

Back

2 + 4 = 6.

Front

What is the related addition fact for 12 - 9 = 3?

Back

3 + 9 = 12.

Front

What is the related subtraction fact for 16 + 2 = 18?

Back

18 - 2 = 16.

Front

What is the related addition fact for 9 - 6 = 3?

Back

3 + 6 = 9.

Front

What does it mean to find a related fact?

Back

Finding a related fact means identifying another addition or subtraction equation that uses the same numbers.

Front

If 5 + 3 = 8, what is a related subtraction fact?

Back

8 - 3 = 5.

Front

If 7 - 4 = 3, what is a related addition fact?

Back

4 + 3 = 7.