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 6, 7, and 13, write the related equations in the fact family.

Back

7 + 6 = 13, 6 + 7 = 13, 13 - 6 = 7, 13 - 7 = 6.

Front

How do you find a missing number in an addition equation?

Back

To find a missing number in an addition equation, subtract the known number from the total.

Front

If you have the equation 9 + ? = 17, how do you find the missing number?

Back

Subtract 9 from 17 to find the missing number: 17 - 9 = 8.

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

Write the equations for the fact family of the numbers 9, 5, and 14.

Back

9 + 5 = 14, 5 + 9 = 14, 14 - 9 = 5, 14 - 5 = 9.

Front

What is the missing number in the equation ? + 7 = 12?

Back

The missing number is 5, because 12 - 7 = 5.

Front

How can you verify if two equations are part of the same fact family?

Back

Check if they use the same three numbers and if one equation can be derived from the other using addition or subtraction.

Front

What is the equation for the fact family that includes the numbers 9, 8, and 17?

Back

9 + 8 = 17, 8 + 9 = 17, 17 - 9 = 8, 17 - 8 = 9.

Front

Explain how to create a fact family from three numbers.

Back

Identify the three numbers and write all possible addition and subtraction equations that can be formed with them.