fact-family/add-sub-within-20-write-all · Sett 17
6 problems
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1
Write the fact family for 19, 1, 20:
=
2
Write the fact family for 15, 4, 19:
=
3
Write the fact family for 16, 2, 18:
=
4
Write the fact family for 17, 2, 19:
=
5
Write the fact family for 3, 12, 15:
=
6
Write the fact family for 16, 4, 20:
=