Will medal! Indicate which property is illustrated in Step 1.

Step 1 9 + (1 + 12) + 0 = 9 + (12 + 1) + 0
Step 2 = (9 + 12) + (1 + 0)
Step 3 = (9 + 12) + 1
Step 4 = 21 + 1
A. distributive property
B. commutative property of multiplication
C. commutative property of addition
D. associative property of addition

Question

Will medal! Indicate which property is illustrated in Step 1.

Step 1	9 + (1 + 12) + 0	=	9 + (12 + 1) + 0
Step 2		=	(9 + 12) + (1 + 0)
Step 3		=	(9 + 12) + 1
Step 4		=	21 + 1
	A.  	distributive property
	B.  	commutative property of multiplication
	C.  	commutative property of addition
	D.  	associative property of addition

anonymous · Answer

commutative property of addition because it is a sum and you are switching the places of two number which is commutative property

anonymous · Answer

thanks so much!! and thanks for explaining!

anonymous · Answer

your welcome :)