Khan/khan-exercises — Issue #14567: Number properties terminology 1 - belongs lower in the mapping
Author: KhanBugz
Created: 2012-02-24 02:51:30+00:00
State: open
Labels: ie8, other, xp

My son had a lot of trouble on this one. He has been working most of the top ones first. This one assumes knowledge of order of operations, notation of multiplication without symbols (no X representing multiplying, just letters next to one another) and the subtleties of differences between commutative & associative (he just sees that rearranging them happens in both). Another video may be in order for specific differences between commutative & associative, but I think this just belongs lower in the mapping & suggested activities. Thanks!

[number_properties_terminology_1.html?seed=162&problem=distributive-values](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_properties_terminology_1.html?seed=162&problem=distributive-values&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_properties_terminology_1.html?seed=162&problem=distributive-values&debug&activity=%5B%5D)

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