fact-family/mixed/hard · 套题 39
6 problems
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1
Write the fact family for 9, 1, 10:
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2
Write the fact family for 5, 1, 6:
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3
Write the fact family for 1, 2, 3:
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4
Write the fact family for 6, 1, 7:
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5
Write the fact family for 5, 4, 20:
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6
Write the fact family for 6, 7, 42:
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