Khan/khan-exercises — Issue #12978: Pre-algebra challenge - Ambiguous numbers expectation should be expressed
Author: KhanBugz
Created: 2012-02-03 05:17:25+00:00
State: open
Labels: firefox, lion, wrong-or-unclear

Reporter: bornagainscholar@gmail.com

I was not sure the best way to answer this question. It is typically assumed that when writing scientific notation you should use only 3 significant digits. I think it would be easier and more clear for those who are trying to have the best record possible to have these expectations in the questions or directions listed like other questions have acceptable answers.

[pre-algebra_challenge.html?seed=124&problem=14 (scientific_notation)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=124&problem=14&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=124&problem=14&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%225.1%5C%22%2C%5C%229%5C%22%5D%22%2C318%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%5D)

[["5.1","9"]]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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