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September 15, 2014

Homework Help: math

Posted by Charles on Wednesday, January 30, 2008 at 6:07pm.

I always thought I understood significant figures...until I attempted to tutor someone. Some of the rules seem counterintuitive. For instance...
10.070 why is it 5 sig fig's? the "0" on the right is useless. without it the # holds the same value.
20 Why is it only "1" sig fig? the "zero" is the difference between two and twenty. seems pretty sig to me.
0.01234 has "4" sig fig's. why isn't the zero to the right of the decimal sig? without it, the # doesn't hold the same value...can someone please explain the concept that I'm missing??

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