fact-family/add-sub-within-10-find-family · 套题 27
6 problems
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1
Write the fact family for 21, 15, 36:
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2
Write the fact family for 5, 42, 47:
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3
Write the fact family for 33, 4, 37:
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4
Write the fact family for 9, 21, 30:
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5
Write the fact family for 28, 21, 49:
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6
Write the fact family for 20, 17, 37:
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