6 (dinner) + 8 (movie) + 4 (popcorn) = $18 total
Associative Property of Addition is used because there are 3 numbers, and regardless of where they are put or how they are placed (in order of not), they all still add up to 18 no matter how you move or place them.
The last 2 numbers ................not the answer
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0.009 is 100 times more than 0.09 I think
