Khan/khan-exercises — Issue #11237: Adding subtracting mixed numbers 1 - Adding and Subtracting Mixed Numbers 1
Author: KhanBugz
Created: 2012-01-14 23:21:34+00:00
State: open
Labels: ie8, not-showing, xp

[adding_subtracting_mixed_numbers_1.html?seed=186&problem=two-numbers](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_subtracting_mixed_numbers_1.html?seed=186&problem=two-numbers&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_subtracting_mixed_numbers_1.html?seed=186&problem=two-numbers&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2219%209%2F20%5C%22%22%2C141%5D%2C%5B%22hint-activity%22%2C%220%22%2C12%5D%5D)

["19 9/20"]

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