fact-family/add-sub-within-20/hard · Sæt 57
6 problems
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1
Write the fact family for 18, 1, 19:
=
2
Write the fact family for 6, 5, 30:
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3
Write the fact family for 8, 12, 20:
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4
Write the fact family for 12, 2, 14:
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5
Write the fact family for 7, 10, 70:
=
6
Write the fact family for 3, 2, 6:
=