Khan/khan-exercises — Issue #15670: Adding negative numbers -                                                                                                                                                          
Author: KhanBugz
Created: 2012-03-07 22:16:41+00:00
State: open
Labels: ie8, other, xp

Reporter:

[adding_negative_numbers.html?seed=156&problem=PLUS](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_negative_numbers.html?seed=156&problem=PLUS&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_negative_numbers.html?seed=156&problem=PLUS&debug&activity=%5B%5D)

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