fact-family/add-sub-within-20-write-all · Sett 25
6 problems
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1
Write the fact family for 2, 13, 15:
=
2
Write the fact family for 9, 4, 13:
=
3
Write the fact family for 11, 9, 20:
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4
Write the fact family for 16, 3, 19:
=
5
Write the fact family for 6, 3, 9:
=
6
Write the fact family for 12, 6, 18:
=