# How do I use scientific notation to write 15,800?

##### 1 Answer

Oct 11, 2014

Please check my answer to this question, especially my preliminary discussion.

http://socratic.org/questions/how-do-i-convert-scientific-notation-to-decimal

The one we need for this problem is to reverse the process.

Think of 15,800 as

Since we are reversing the process, moving the decimal place to the left will increase

We want to reduce 15800 to single digits. Hence, we need to move the decimal place 4 places to the left. Correspondingly, we need to increase

So, we have