Khan/khan-exercises — Issue #5142: Adding and subtracting negative numbers - swag
Author: KhanBugz
Created: 2011-10-28 18:16:58+00:00
State: open
Labels: firefox, snowleo

boring

[adding_and_subtracting_negative_numbers.html?seed=146&problem=PLUS](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_negative_numbers.html?seed=146&problem=PLUS&debug)

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Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

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