Description: Sal talks about why moving the decimal point to the left when dividing by a power of 10 makes sense. Created by Sal Khan and Monterey Institute for Technology and Education. But what I want to do in this video is focus on kind of a faster way to think about it. So 99, let's just think about it a little bit. So essentially, you would move the decimal place one to the left when you divide by 10.*Teacher Advisor is 100% free.