C. Siblings
This is the fact family for 1, 3, and 4.
3 + 1 = 4 1 + 3 = 4
4 − 3 = 1 4 − 1 = 3
Complete the fact families:
- 2 + 4 = 6
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______________ - 3 + 2 = 5
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This is the fact family for 1, 3, and 4.
3 + 1 = 4 1 + 3 = 4
4 − 3 = 1 4 − 1 = 3
Complete the fact families: