Description: Sal decomposes multiples of ten to multiply. Created by Sal Khan. And 18 times 10 is just going to be 180. Now, the more practice you get here, you'll realize, hey, I could have just said 3 times 6 is 18, but I have to worry about this 0 right over here. So I'm going to put one more zero at the end.*Teacher Advisor is 100% free.