Skill
6B Fact Families: Related Facts When a question in a textbook asks for a "related fact," it is asking for the other facts in its fact family. If you recall from previous skills, a fact family is simply taking the 3 numbers in a math fact and changing the order so the problem is still correct. Therefore, the math fact related to 7+5=12 is 12-7=5. You can see that all three numbers in the addition number sentence are used in the subtraction fact, but just in a different order.. |
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Which subtraction
fact is related to |
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A. | 7 - 5 = 2 | |

B. | 12 - 7 = 5 | |

C. | 5 - 1 = 4 | |

D. | 12 - 6 = 6 |