# Algebra: Fact Family

A **fact family** is a set of related facts.

For the numbers 2, 7, and 11, this is the fact family:

2 + 7 =11

7 + 2 = 11

11 – 2 = 7

11 – 7 = 2

Learn more about fact families by reading the explanation below.

**Practice Time!** Answer the exercise below about using fact families to find sums and differences.