Question

Which properties did Carmen use to solve the following problem?

17 + (45 + 23)

17 + (23 + 45)

(17 + 23) + 45

40 + 45

85

Answers

Ms. Sue
http://www.mathsisfun.com/associative-commutative-distributive.html

im the world
no answers
kiiloo
associative property of addition
Rap-Geta
associative property of addition
identity property of multiplication
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