fact-family/add-sub-within-100/expert · 套题 45
5 problems
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1
Write the fact family for 85, 2, 87:
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2
Write the fact family for 9, 12, 108:
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3
Write the fact family for 3, 11, 33:
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4
Write the fact family for 5, 4, 20:
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5
Write the fact family for 84, 3, 87:
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