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math

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Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?


1) commutative property of addition
2) distributive property
3) additive identity
4) additive inverse

  • math - ,

    mentally I would do it as
    27+3 + 15+5
    or
    30+20

    You decide which properties I used.

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