Match each item in Column A to an answer in Column B.


What property is shown by the equation?



Column A

1.–(–33 + 18) = 33 + (–18)

2.–10 + (–15) = –15 + (–10)

3.4 + (29 + 16) = 4 + (16 + 29)

4.–12 + (12 + 27) = (–12 + 12) + 27


Column B

A.commutative property

B.associative property

C.opposite of a sum property