Fact Families for Subtraction

Name: _______________________________

Date: _______________________________

Remember: A fact family uses the same three numbers to make related addition and subtraction facts.

Part 1: Complete the Fact Family Triangles

Fill in the missing number in each triangle, then write the fact family.

15

8

__

8 + _____ = 15

_____ + 8 = 15

15 − 8 = _____

15 − _____ = 8

__

9

5

9 + 5 = _____

5 + 9 = _____

_____ − 9 = 5

_____ − 5 = 9

Part 2: Write the Fact Families

Use the three numbers to write all four facts in the family.

Numbers: 6, 7, 13

_____ + _____ = _____

_____ − _____ = _____

_____ + _____ = _____

_____ − _____ = _____

Numbers: 4, 9, 13

_____ + _____ = _____

_____ − _____ = _____

_____ + _____ = _____

_____ − _____ = _____

Part 3: Find the Missing Numbers

Use fact families to help you solve these problems.

12 − 5 = _____

11 − 7 = _____

16 − 9 = _____

14 − 6 = _____

18 − 9 = _____

15 − 7 = _____

13 − 8 = _____

17 − 8 = _____