fact-family/add-sub-within-10/medium · 套题 94
6 problems
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1
Write the fact family for 5, 4, 9:
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2
Write the fact family for 4, 10, 40:
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3
Write the fact family for 4, 2, 6:
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4
Write the fact family for 2, 2, 4:
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5
Write the fact family for 3, 5, 15:
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6
Write the fact family for 4, 9, 36:
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