Khan/khan-exercises — Issue #11984: Adding and subtracting fractions - Correct answer not accepted
Author: KhanBugz
Created: 2012-01-24 11:15:54+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: hjdrtaylor@gmail.com

The question in question resulted in an improper fraction which I believe could not be simplified; 57/15. I put in this answer and was told to simplify. Appalled, I instead entered the mixed number 3 4/5, which was accepted. I am very concerned with this, as both answers are correct, and neither is more correct than the other. As a Theoretical Astrophysics major and aspiring teacher (funny how I'm stuck on simple addition) I can see confusion and improper learning resulting from this in those who cannot understand the issue (like, say, kids). I love this site, and I love the teaching methods :) . . . I'm just concerned with this programming hang-up. Love ya, Hunter

[adding_and_subtracting_fractions.html?seed=57&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_fractions.html?seed=57&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_fractions.html?seed=57&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0a1) Gecko/20120113 Firefox/12.0a1

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