Khan/khan-exercises — Issue #11590: Number properties terminology 1 - Missing + operators?
Author: KhanBugz
Created: 2012-01-19 08:12:27+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

The question:
4+8(2+9)=4+(8)(2)+(8)(9)

I think there are missing + signs in front of the (2+9),(2) and (9)

[number_properties_terminology_1.html?seed=80&problem=distributive-values](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_properties_terminology_1.html?seed=80&problem=distributive-values&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_properties_terminology_1.html?seed=80&problem=distributive-values&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22Commutative%5C%22%22%2C87%5D%5D)

["Commutative"]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.220 Safari/535.1

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