fact-family/add-sub-within-10/expert · 套题 63
6 problems
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1
Write the fact family for 7, 2, 9:
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2
Write the fact family for 9, 10, 90:
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3
Write the fact family for 3, 7, 21:
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4
Write the fact family for 1, 6, 7:
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5
Write the fact family for 6, 6, 36:
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6
Write the fact family for 2, 3, 5:
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