Posted by **Hayley** on Sunday, February 27, 2011 at 3:24pm.

1. 3+2+1=1+2+3

2. 3(1+4)=(3x1)+(3X4)

3. 9(5+6)=45+54

4. 9+(4+3)=(4+3)+9

5. (9+7)+6=9+(7+6)

6. 5(a+7)=5a+35

A. Associative Prop. of Addition

B. Associative Prop. of Multiplication

C. Commutative Prop. of Addition

D. Commutative Prop. of Multiplication

E. Distributive Prop.

1.C

2.B

3.E

4.A

5.A

6.E

- Math -
**MathMate**, Sunday, February 27, 2011 at 5:53pm
1,3,4,5,6 are correct.

Rethink 2, you'll get it right.

- Math -
**Hayley**, Sunday, February 27, 2011 at 8:20pm
Would it be E?

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