fact-family/add-sub-within-10/easy · 套题 44
5 problems
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1
Write the fact family for 1, 3, 4:
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2
Write the fact family for 2, 6, 8:
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3
Write the fact family for 5, 5, 10:
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4
Write the fact family for 7, 1, 8:
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5
Write the fact family for 5, 2, 7:
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