fact-family/add-sub-within-20/easy · Sæt 67
6 problems
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1
Write the fact family for 2, 7, 9:
=
2
Write the fact family for 16, 4, 20:
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3
Write the fact family for 1, 6, 7:
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4
Write the fact family for 18, 1, 19:
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5
Write the fact family for 16, 3, 19:
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6
Write the fact family for 17, 2, 19:
=