Khan/khan-exercises — Issue #15863: Pre-algebra challenge - 8 + (8 - 4 x 10) x 2
Author: KhanBugz
Created: 2012-03-09 23:41:33+00:00
State: open
Labels: chrome, wrong-or-unclear, xp

Reporter: mattschafer501@gmail.com

when it gets down to 8 + (-32) x 2 you multiply negative 32 by 2 it becomes positive 64 because when you multiply a negative by a negative it becomes positive so it should be 8 + 64 not 8 - 64

[pre-algebra_challenge.html?seed=62&problem=8 (order_of_operations)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=62&problem=8&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=62&problem=8&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2272%5C%22%22%2C48%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%5D)

["72"]

Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.78 Safari/535.11

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