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Fact Families and Turn-Around Facts

Worksheet · Grade 1 · English

Fact Families and Addition Properties

Fact Families and Addition Properties

Name: ____________________ Date: __________

Part 1: Fact Family Triangles

Instructions: Look at each triangle. Use the three numbers to write two addition facts and two subtraction facts for each family.

1.

fig 1: Fact Family Triangle with 10, 3, and 7
fig 1: Fact Family Triangle with 10, 3, and 7






2.

fig 2: Fact Family Triangle with 12, 4, and 8
fig 2: Fact Family Triangle with 12, 4, and 8






3.

fig 3: Fact Family Triangle with 15, 6, and 9
fig 3: Fact Family Triangle with 15, 6, and 9






4.

fig 4: Fact Family Triangle with 11, 5, and 6
fig 4: Fact Family Triangle with 11, 5, and 6






5.

fig 5: Fact Family Triangle with 13, 5, and 8
fig 5: Fact Family Triangle with 13, 5, and 8






6.

fig 6: Fact Family Triangle with 14, 5, and 9
fig 6: Fact Family Triangle with 14, 5, and 9






7.

fig 7: Fact Family Triangle with 16, 7, and 9
fig 7: Fact Family Triangle with 16, 7, and 9






8.

fig 8: Fact Family Triangle with 18, 8, and 10
fig 8: Fact Family Triangle with 18, 8, and 10







Part 2: Turn-Around Facts (Commutative Property)

Instructions: The commutative property says we can add numbers in any order. Solve these turn-around pairs!
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CCSS 1.OA.B.3

Fact Families and Turn-Around Facts

Fact Families and Turn-Around Facts

Name: ____________________ Date: __________

Part 1: Fact Family Fun!

Instructions: Use the three numbers in each triangle to write 4 related number sentences. You will write 2 addition sentences and 2 subtraction sentences.

1.

fig 1: Fact family triangle with 3, 7, and 10
fig 1: Fact family triangle with 3, 7, and 10






2.

fig 2: Fact family triangle with 4, 8, and 12
fig 2: Fact family triangle with 4, 8, and 12






3.

fig 3: Fact family triangle with 6, 9, and 15
fig 3: Fact family triangle with 6, 9, and 15






4.

fig 4: Fact family triangle with 5, 6, and 11
fig 4: Fact family triangle with 5, 6, and 11






5.

fig 5: Fact family triangle with 5, 8, and 13
fig 5: Fact family triangle with 5, 8, and 13






6.

fig 6: Fact family triangle with 5, 9, and 14
fig 6: Fact family triangle with 5, 9, and 14






7.

fig 7: Fact family triangle with 7, 9, and 16
fig 7: Fact family triangle with 7, 9, and 16






8.

fig 8: Fact family triangle with 8, 10, and 18
fig 8: Fact family triangle with 8, 10, and 18







Part 2: Turn-Around Facts

Instructions: When we add, we can change the order of the numbers and the sum stays the same. These are called turn-around facts! Fill in the blanks.
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CCSS 1.OA.B.3