fact-family/add-sub-within-20/expert · Sæt 53
6 problems
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1
Write the fact family for 19, 1, 20:
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2
Write the fact family for 3, 12, 36:
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3
Write the fact family for 3, 6, 9:
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4
Write the fact family for 17, 1, 18:
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5
Write the fact family for 10, 2, 12:
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6
Write the fact family for 1, 15, 16:
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