Khan/khan-exercises — Issue #4166: Properties of numbers 2 - Properties of Numbers 2
Author: KhanBugz
Created: 2011-10-11 19:10:51+00:00
State: open
Labels: chrome, xp

Reporter: jeffandjanetjohnson@gmail.com

How can my daughter answer the question, "by what number can we multiply 4928 by to get 1?" when she has not learned fractions? The lecture on the identity property of 1 did not explain how to do this. It seems to me (her home school teacher) this concept should appear after fractions and not before. I'm not sure if this is the correct forum to communicate this issue as it isn't a software problem, but more of a conceptual problem. Thank you.

[properties_of_numbers_2.html?seed=172&problem=multiplicative-inverse](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_2.html?seed=172&problem=multiplicative-inverse)

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Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1

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