fact-family/add-sub-within-10/hard · セット 25
6 problems
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1
Write the fact family for 3, 10, 30:
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2
Write the fact family for 4, 3, 7:
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3
Write the fact family for 8, 2, 16:
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4
Write the fact family for 2, 8, 16:
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5
Write the fact family for 1, 6, 7:
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6
Write the fact family for 7, 2, 9:
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