fact-family/add-sub-within-20/hard · Sæt 64
6 problems
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1
Write the fact family for 5, 4, 20:
=
2
Write the fact family for 4, 8, 32:
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3
Write the fact family for 3, 10, 30:
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4
Write the fact family for 2, 18, 20:
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5
Write the fact family for 13, 3, 16:
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6
Write the fact family for 3, 2, 6:
=