fact-family/add-sub-within-20-write-all · 套题 69
5 problems
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1
Write the fact family for 16, 1, 17:
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2
Write the fact family for 1, 7, 8:
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3
Write the fact family for 3, 9, 12:
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4
Write the fact family for 19, 1, 20:
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5
Write the fact family for 9, 7, 16:
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