Khan/khan-exercises — Issue #4195: Addition 1 - no question !~! duh!! :P 
Author: KhanBugz
Created: 2011-10-12 02:28:10+00:00
State: open
Labels: chrome, xp

[addition_1.html?seed=41&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_1.html?seed=41&problem=0)

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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

MathJax is loaded, ready, queue length: 2

Your internet might be too slow to see an exercise. Refresh the page or report a problem.

http://www.khanacademy.org/khan-exercises/utils/MathJax/1.1a/jax/output/HTML-CSS/fonts/TeX/fontdata.js: error