Help pls just click the picture then you see it

1. 8 + 13 = 13 + 8.

2. 6 + ( 12 + 4) = 6 + ( 4 + 12).

Step-by-step explanation:

The Commutative Property of Addition is changing the order of the numbers to get the sum, but not changing the actual sum itself.  

The Associative Property of Addition is the allowance of being able to re-group numbers and still get the same sum, or answer.

60.96438

step-by-step explanation:

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6