At the movies, aaron buys popcorn for $5.25 and a bottle of water for $2.50. he pays with a $10 bill. how much change should aaron receive?

The answer is $2.25.

First, you have to add the amount that Aaron paid. Then, subtract it from 10, which is the amount of the bill he is paying with.

5.25 + 2.50 = 7.75
10-7.75 = 2.25