Khan/khan-exercises — Issue #4227: Addition 2 - to hard
Author: KhanBugz
Created: 2011-10-12 18:23:44+00:00
State: open
Labels: ie8, xp

Reporter: cbgmchujgu fyi

to hard

[addition_2.html?seed=28&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_2.html?seed=28&problem=0)

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