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Adding Adders: Fact Families

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Adding Adders: Fact Families

Use addition and subtraction to complete each fact family. Check that each equation uses the same three numbers.

Array Fact Families

Use the dot arrays to write the related addition and subtraction facts.

1.For the first array, write both repeated-addition equations and two repeated-subtraction equations that leave one group of dots. ● ● ● ● ● ● ● ● ● ● ● ●

2.For the second array, complete the fact family: 7 + 7 = ; + = 14; 14 − 7 = ; 14 − 7 = . ● ● ● ● ● ● ● ● ● ● ● ● ● ●

3.For the third array, write one repeated-addition equation and one subtraction equation that uses the total and one row. ● ● ● ● ● ● ● ● ● ●

Missing Numbers

Use the related addition and subtraction facts to find each missing number.

4.Complete the fact family for 16: 8 + = 16; + 8 = 16; 16 − 8 = ; 16 − = 8.

5.Complete the fact family for 19: 11 + = 19; + 11 = 19; 19 − 11 = ; 19 − = 11.

6.Which number belongs in both blanks? 6 + ___ = 15 and 15 − 6 = ___.

Using Inverse Operations

Addition and subtraction are inverse operations: one can help you check the other.

7.Draw an array with 3 rows of 5 dots. Then write the two subtraction facts that use its total and the one-row and two-row groupings.

8.Explain how 8 + 5 = 13 can help you work out 13 − 8. What is the answer?

9.Write the four addition and subtraction facts that use 6, 9, and 15.

10.Which equation does not belong to the fact family for 7, 8, and 15?

7 + 8 = 15
8 + 7 = 15
15 − 7 = 8
15 − 8 = 8

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Adding Adders: Fact Families

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2 printable pages

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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