Addition and Subtraction Fact Families

Front

What is a fact family in addition and subtraction?

Back

A fact family is a group of related addition and subtraction facts that use the same numbers. For example, the numbers 2, 3, and 5 can form the fact family: 2 + 3 = 5, 3 + 2 = 5, 5 - 2 = 3, and 5 - 3 = 2.

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.B.2

Front

What is the relationship between addition and subtraction?

Back

Addition and subtraction are inverse operations. This means that if you know an addition fact, you can find the related subtraction fact by rearranging the numbers.

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.9

Front

If 8 + 4 = 12, what is the related subtraction fact?

Back

The related subtraction fact is 12 - 4 = 8.

Tags

CCSS.2.NBT.B.9

Front

How can you find a related addition fact from a subtraction equation?

Back

To find a related addition fact from a subtraction equation, you can rearrange the numbers. For example, from 10 - 3 = 7, you can derive 7 + 3 = 10.

Tags

CCSS.2.NBT.B.9

CCSS.2.OA.A.1

Front

What is the addition fact for the subtraction equation 9 - 5 = 4?

Back

The addition fact is 4 + 5 = 9.

Tags

CCSS.2.NBT.B.9

Front

What is the subtraction fact for the addition equation 5 + 6 = 11?

Back

The subtraction fact is 11 - 6 = 5.

Tags

CCSS.2.NBT.B.9

Front

How do you verify if two numbers are part of the same fact family?

Back

To verify if two numbers are part of the same fact family, check if you can create both addition and subtraction equations using those numbers.

Front

What is the addition fact for the equation 12 - 4 = 8?

Back

The addition fact is 8 + 4 = 12.

Tags

CCSS.2.NBT.B.9

Front

If you know that 15 - 7 = 8, what is the related addition fact?

Back

The related addition fact is 8 + 7 = 15.

Tags

CCSS.2.NBT.B.9

Front

What is the subtraction fact for the addition equation 3 + 5 = 8?

Back

The subtraction fact is 8 - 5 = 3.

Tags

CCSS.2.NBT.B.9