Addition and Subtraction Fact Families

Front

What is a fact family?

Back

A fact family is a group of related addition and subtraction (or multiplication and division) facts that use the same numbers.

Front

What are the four numbers in a fact family?

Back

The four numbers in a fact family consist of two addition and two subtraction facts using the same three numbers.

Front

If 8 + 2 = 10, what are the related subtraction facts?

Back

The related subtraction facts are 10 - 8 = 2 and 10 - 2 = 8.

Front

What is the missing number in the fact family: 12 - 5 = 7, 7 + __ = 12?

Back

5

Front

What is the missing number in the fact family: 20 - 15 = 5, 5 + __ = 20?

Back

15

Front

If 6 + 4 = 10, what is the related subtraction fact?

Back

10 - 4 = 6.

Front

What is the missing number in the fact family: 14 - 9 = 5, 5 + __ = 14?

Back

9

Front

What is the missing number in the fact family: 18 - 7 = 11, 11 + __ = 18?

Back

7

Front

If 3 + 6 = 9, what are the related subtraction facts?

Back

9 - 3 = 6 and 9 - 6 = 3.

Front

What is the missing number in the fact family: 10 + 5 = 15, 15 - __ = 10?

Back

5