Well, it would make the computation a lot easier: Without the distributive property: 3 ( 30 - 2 ) = 3 ( 28 ) = 84. I’m going to assume that you don’t know 3 ( 28 ) right off of the top of your head, so you can do: 3 ( 30 ) - 3 ( 2 ) = 90 - 6 = 84. This way is much easier and less time consuming because you can do this computation in your head.