Khan/khan-exercises — Issue #9987: Pre-algebra challenge - pre-algebra challenge
Author: KhanBugz
Created: 2012-01-01 18:56:05+00:00
State: open
Labels: firefox, other, xp

Reporter: dovesunderoakes@yahoo.com

the problem is that the computer is not doing it's order of operation's correctly. Here, take a look:
10−7×1+459

=10−7×1+5

=10−7+5

=3+5

=8

as you can see, it is operating incorrectly. it should do it's parentheses first, multiplication next, then division, then addition, and finally subtraction. please look into the matter.thanks!

[pre-algebra_challenge.html?seed=26&problem=13 (order_of_operations)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=26&problem=13&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=26&problem=13&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%222%5C%22%22%2C45%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C10%5D%2C%5B%22hint-activity%22%2C%220%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C18%5D%5D)

["2"]

Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

MathJax is loaded, ready, queue length: 0