Fact Families Question
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Grade 1 Fact Families CCSS: 1.OA.B.3
[math]12 - 4 = 8[/math]
[math]12 - 8 = 4[/math]
[math]4 + 8 = 12[/math]
- [math]8 - 4 = 4[/math]
- [math]8 + 4 = 12[/math]
- [math]12 + 4 = 16[/math]
- [math]12 + 8 = 20[/math]