Fact Families

Front

What is a fact family in mathematics?

Back

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

Front

Given the numbers 8, 5, and 13, what are the related equations in the fact family?

Back

The related equations are: 8 + 5 = 13, 5 + 8 = 13, 13 - 5 = 8, 13 - 8 = 5.

Front

Which equation does NOT belong to the fact family of 8, 5, and 13?

Back

8 - 5 = 3 does NOT belong to the fact family.

Front

If you have the equation 6 - 2 = 4, what is the related addition fact?

Back

The related addition fact is 2 + 4 = 6.

Front

If 9 - 4 = 5, what is the sum of 5 and 4?

Back

The sum of 5 and 4 is 9.

Front

What is the missing number in the equation 4 + 7 = 11 if you need to find ? - 4 = 7?

Back

The missing number is 11.

Front

Complete the fact family: 2 + 8 = 10, 8 + 2 = 10, 10 - 2 = 8. What is the last equation?

Back

The last equation is 10 - 8 = 2.

Front

How can you identify a fact family from a set of numbers?

Back

You can identify a fact family by finding all possible addition and subtraction or multiplication and division combinations of the numbers.

Front

What is the relationship between addition and subtraction in a fact family?

Back

Addition and subtraction are inverse operations; knowing one allows you to find the other.

Front

What is the relationship between multiplication and division in a fact family?

Back

Multiplication and division are inverse operations; knowing one allows you to find the other.