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.

Tags

CCSS.4.NBT.B.6

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.

Tags

CCSS.1.OA.C.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.

Tags

CCSS.1.OA.A.1

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.

Tags

CCSS.2.OA.A.1

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.

Tags

CCSS.2.NBT.B.5

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.

Tags

CCSS.4.NBT.B.6

Front

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

Back

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

Tags

CCSS.1.OA.A.1

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.

Tags

CCSS.2.NBT.B.5

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.

Tags

CCSS.4.NBT.B.6

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.