Khan/khan-exercises — Issue #4291: Addition 2 - too hard
Author: KhanBugz
Created: 2011-10-13 17:38:18+00:00
State: open
Labels: ie8, ie9, vista

[addition_2.html?seed=165&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_2.html?seed=165&problem=0)

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