Khan/khan-exercises — Issue #9135: Addition 4 - no problem/scratchpad frozen
Author: KhanBugz
Created: 2011-12-20 23:11:35+00:00
State: open
Labels: ie8, not-showing, win7

[addition_4.html?seed=88&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_4.html?seed=88&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_4.html?seed=88&problem=0&debug&activity=%5B%5D)

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Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; GTB7.2; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; HPDTDF; BRI/1; .NET4.0C; .NET CLR 1.1.4322)

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