fact-family/add-sub-within-20/hard · Sett 61
6 problems
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1
Write the fact family for 17, 1, 18:
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2
Write the fact family for 3, 16, 19:
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3
Write the fact family for 14, 1, 15:
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4
Write the fact family for 16, 3, 19:
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5
Write the fact family for 10, 8, 80:
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6
Write the fact family for 13, 7, 20:
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