Khan/khan-exercises — Issue #6937: Subtraction 4 - scracth is not working
Author: KhanBugz
Created: 2011-11-23 00:00:34+00:00
State: open
Labels: ie8, ie9, other, win7

Reporter: shadowkooldu@gmail.com

[subtraction_4.html?seed=12&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/subtraction_4.html?seed=12&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/subtraction_4.html?seed=12&problem=0&debug&activity=%5B%5D)

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Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; AskTbBCPA/5.13.1.18107)

MathJax is loaded, ready, queue length: 0