fact-family/add-sub-within-20/expert · Sada 93

6 problems
1
Write the fact family for 2, 18, 20: =
2
Write the fact family for 9, 1, 10: =
3
Write the fact family for 15, 2, 17: =
4
Write the fact family for 11, 2, 22: =
5
Write the fact family for 5, 1, 6: =
6
Write the fact family for 10, 11, 110: =
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