fact-family/add-sub-within-100/medium · 套题 21
6 problems
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1
Write the fact family for 4, 7, 28:
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2
Write the fact family for 2, 11, 22:
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3
Write the fact family for 84, 4, 88:
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4
Write the fact family for 9, 11, 99:
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5
Write the fact family for 3, 52, 55:
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6
Write the fact family for 5, 3, 15:
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