fact-family/add-sub-within-10/expert · 套题 100
6 problems
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1
Write the fact family for 5, 1, 6:
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2
Write the fact family for 9, 5, 45:
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3
Write the fact family for 8, 5, 40:
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4
Write the fact family for 3, 6, 18:
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5
Write the fact family for 7, 8, 56:
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6
Write the fact family for 2, 9, 18:
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