What is the fact family of 10?

A fact family is a group of related math facts using the same numbers. For the number 10, a simple fact family could involve the numbers 10, 5, and 5. The related addition and subtraction facts would be: 5 + 5 = 10 and 10 - 5 = 5. Similarly, the multiplication and division facts could be: 2 × 5 = 10 and 10 ÷ 2 = 5.