Khan/khan-exercises — Issue #12738: Addition 3 - Addition 2 and 3
Author: KhanBugz
Created: 2012-02-01 03:46:31+00:00
State: open
Labels: ie8, ie9, not-showing, win7

[addition_3.html?seed=22&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_3.html?seed=22&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_3.html?seed=22&problem=0&debug&activity=undefined)

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