Algebra
posted by Beau .
I am in 5th grade and we are to find out who invented the order of operation. I understand how to use it and found web sites, but I am unable to locate who invented it.

No one knows who invented the order of operations.

These web sites will help you.
http://mathforum.org/library/drmath/view/52582.html
http://en.wikipedia.org/wiki/Order_of_operations 
11y=88

The Order of Operations rules in mathematics were not invented by one single person. They have been developed over the last few centuries.