Question

Martin was paid $25 on Monday and Tuesday. Then he was paid $30 on Thursday and Friday. Now, he is paid $25 twice on Monday and $30 twice on Friday. He should still be getting the same amount of money. What property of operations should he use to confirm this?

associative property of addition

A.associative property of addition

B.associative property of multiplication

C.commutative property of addition

D.distributive property

Answer 1

A. Associative property of addition.

This is as:

PREVIOUS PAY SCHEDULE = CURRENT PAY SCHEDULE

25 + 25 + 30 + 30 = 2 ( 25 ) + 2 ( 30 )

50 + 60 = 50 + 60

110 = 110

As this uses associative property of addition, the answer is A.