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Fact Families 1st Grade Wednesday, August 19, 2015Wednesday, August 19, 2015Wednesday, August 19, 2015Wednesday, August 19, 2015 Ms. Butler

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Definition Four math problems -Two addition sentences -Two subtraction sentences Use the same three numbers

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Addition Sentences 2, 3, 5 2+3=5 What number is first? 3+2=5 What number is first? Are the same numbers used?

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Subtraction Sentences 2, 3, 5 5-2=3 5-3=2 What number is first in both sentences? How are the sentences different? Are the same numbers used?

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Now You Try! What two addition sentences can you write for these three numbers? 38 5

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If you said……….. 3 + 5 = 8 or 5 + 3 = 8 Then you were correct! Give yourself a round of applause!!!!!!

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Now You Try! What two subtraction sentences can you write for these three numbers? 38 5

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If you said……….. 8 – 5 = 3 or 8 – 3 = 5 Then you were correct! Give yourself a round of applause!!!!!!

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Let’s Review A fact family: uses the same three numbers has two addition sentences has two subtraction sentences

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Great Websites: Kaboose Fact Families Skill Builders More Games

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