Khan/khan-exercises — Issue #8753: Significant figures 1 - Placeholder or Not?
Author: KhanBugz
Created: 2011-12-15 20:13:57+00:00
State: open
Labels: firefox, wrong-or-unclear, xp

Zeros to the right of a decimal may or may not be significant. It depends on if they are placholders or required. For example, if thngs are defined as being in a financial format, $1.00 has three significant digits, even though the 0s have no value. On the other hand, in 0328.1930 there is nothing to indicate if the trailing 0 is significant or not, therefore the answer can be 6 or 7 and which would depend on the teacher, wording of the question, and so on.

[significant_figures_1.html?seed=40&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/significant_figures_1.html?seed=40&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/significant_figures_1.html?seed=40&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%226%5C%22%22%2C10%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226%5C%22%22%2C14%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226%5C%22%22%2C1%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%5D)

["6","6","6"]

Mozilla/5.0 (Windows NT 5.1; rv:6.0.2) Gecko/20100101 Firefox/6.0.2

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