fact-family/mixed-within-20-fill-blanks · セット 96
6 problems
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1
Write the fact family for 8, 12, 20:
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2
Write the fact family for 1, 1, 2:
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3
Write the fact family for 11, 5, 16:
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4
Write the fact family for 6, 13, 19:
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5
Write the fact family for 18, 1, 19:
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6
Write the fact family for 16, 4, 20:
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