Khan/khan-exercises — Issue #10105: Number line 3 - Incorrect answer on a simple question.
Author: KhanBugz
Created: 2012-01-03 16:08:04+00:00
State: open
Labels: ie8, ie9, win7, wrong-or-unclear

Reporter: travisrenecker@hotmail.com

The question was:

What number is 1 position to the left of the orange dot? The distance between adjacent tick marks is 1.

The answer was:
We know where 14 is on this number line because it is labeled.

Numbers to the left of 14 are smaller, while numbers to the right of 14 are bigger.

We need to find the number represented by the blue dot, which is 1 position to the left of the orange dot.

Starting from 14, we move 2 2 to the left to reach the blue dot.

(THIS IS INCORRECT)

Thus, the blue dot represents the number 12.

[number_line_3.html?seed=115&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_line_3.html?seed=115&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_line_3.html?seed=115&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2213%5C%22%22%2C11%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C23%5D%2C%5B%22hint-activity%22%2C%220%22%2C25%5D%2C%5B%22hint-activity%22%2C%220%22%2C26%5D%2C%5B%22hint-activity%22%2C%220%22%2C27%5D%5D)

["13"]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MS-RTC LM 8; .NET CLR 1.1.4322; Tablet PC 2.0; .NET4.0C; .NET4.0E; InfoPath.3)

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