Description: Sal uses pictures and practice problems to see commutativity and associativity in multiplication. Created by Sal Khan. So if you look at each of these 4 by 6 grids, it's pretty clear that there's 24 of these green circle things in each of them. But what I want to show you is that you can get 24 as the product of three numbers in multiple different ways. And it actually doesn't matter which products you take first or what order you actually do them in.*Teacher Advisor is 100% free.