Mathematics, 30.01.2020 18:02 jjhagan22

Tony wants to model the associative property of addition using a number sentence. which number sentence could be used for tonys model? < br /> a. 6+(4+5)=6+(5+4) < br /> b. 8+7=8+7+0 < br /> c. 7+(3+6)=(7+3)+6 < br /> d. 8+7=9+6

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Tony wants to model the associative property of addition using a number sentence. which number sente...