fact-family/add-sub-within-20/medium · セット 50
6 problems
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1
Write the fact family for 4, 4, 8:
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2
Write the fact family for 9, 11, 99:
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3
Write the fact family for 8, 2, 10:
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4
Write the fact family for 12, 12, 144:
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5
Write the fact family for 11, 2, 22:
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6
Write the fact family for 6, 5, 11:
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