Khan/khan-exercises — Issue #8724: Pre-algebra challenge - did not give me creadit
Author: KhanBugz
Created: 2011-12-15 16:39:09+00:00
State: open
Labels: not-showing, safari

Reporter: Ruddief@mail.com

[pre-algebra_challenge.html?seed=61&problem=15 (scientific_notation)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=61&problem=15&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=61&problem=15&debug&activity=%5B%5D)

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