Maths

Jan 26, 2008 22:41

I just balanced my checkbook, but instead of using a calculator I did the math on paper. I'm kind of ashamed to say that it took me a couple of tries to remember how to do subtraction in numbers that big ( Read more... )

math, money

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Comments 5

sarabandeness January 27 2008, 05:54:44 UTC
i just studied for the GRE... the Princeton Review's "Crash Course" for the GRE actually has a ton of that "practical" math in it...

as for tips, just move the decimal over one place to the left, which will give you ten percent, then add half of the ten percent to itself, and voila: 15% tip. For example - if the bill is $18.76, 10% is $1.87, or approximately two bucks, so a three dollar tip will do the trick :)

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bassvampire1306 January 27 2008, 17:55:39 UTC
OK, that sounds easy enough. Thanks!

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peter50 January 27 2008, 06:56:30 UTC
with 15% tip I find it easier to do it this way ( ... )

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violabelle January 27 2008, 16:18:53 UTC
Move the decimal point to the left 1 to get 10%. Then divide that by 2 to get 5% or just double it to give 20%, which tends to be nicer anyway.

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bassvampire1306 January 27 2008, 17:56:08 UTC
Yeah, we like being nice.

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