Khan/khan-exercises — Issue #13023: Adding negative numbers - to easy
Author: KhanBugz
Created: 2012-02-03 21:15:07+00:00
State: open
Labels: firefox, hard, snowleo

to easy

[adding_negative_numbers.html?seed=166&problem=PLUS](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_negative_numbers.html?seed=166&problem=PLUS&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_negative_numbers.html?seed=166&problem=PLUS&debug&activity=%5B%5D)

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Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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