Khan/khan-exercises — Issue #15271: Addition 1 - practice
Author: KhanBugz
Created: 2012-03-02 22:16:27+00:00
State: open
Labels: firefox, other, xp

[addition_1.html?seed=193&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_1.html?seed=193&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_1.html?seed=193&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5C%2214%5C%22%22%2C9%5D%5D)

["14"]

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

MathJax is loaded, ready, queue length: 0