Khan/khan-exercises — Issue #5678: Order of operations - Order of operations?
Author: KhanBugz
Created: 2011-11-06 19:37:13+00:00
State: open
Labels: chrome, win7

Reporter: empresschaos@gmail.com

Two of the problems I've encountered in this exercise have solutions that are achieved only when subtraction is executed before addition. I believe it's supposed to be the other way around. For example, 9−10×7+10/1 should be (I think) -71, but the exercise disagrees, and the help section calls for 9-70+10 to be simplified to -61+10.

[order_of_operations.html?seed=196&problem=9](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/order_of_operations.html?seed=196&problem=9&debug)

["-71"]

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.106 Safari/535.2

MathJax is loaded, ready, queue length: 0