fact-family/add-sub-within-20-write-all · Sett 99
6 problems
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1
Write the fact family for 2, 15, 17:
=
2
Write the fact family for 16, 2, 18:
=
3
Write the fact family for 14, 2, 16:
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4
Write the fact family for 6, 2, 8:
=
5
Write the fact family for 14, 1, 15:
=
6
Write the fact family for 9, 3, 12:
=