Khan/khan-exercises — Issue #14519: Pre-algebra challenge - to hard
Author: KhanBugz
Created: 2012-02-23 18:30:28+00:00
State: open
Labels: hard, ie8, ie9, win7

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

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=22&problem=0&debug&activity=%5B%5D)

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