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and how do you do the math without calculator? thanks.

2007-05-29 05:32:11 · 14 answers · asked by RobertH 1 in Science & Mathematics Mathematics

14 answers

10 percent = 10/100 = .1
then you multiply this by the amount you need the percentage of:
271.25*.1 = 27.125 ~ $27.13

2007-05-29 05:35:24 · answer #1 · answered by pinkpearls 3 · 2 2

The easiest way to take 10% of something without using a calculator, is to move the decimal point 1 space to the left. That will give you an answer.

In this case, you get: $27.125

2007-05-29 12:38:09 · answer #2 · answered by RG 3 · 1 0

About $27.13. With 10%, the way I do it is just shift the decimal place left one spot. If you need to show the work you can set up as a proportion. Like:
x over 271.25 is equal to 10 over 100.
Cross multiply, X * 100 and 271.25 * 10
You should get 100x= 2712.5
Next divide 2712.5 by 100.
x= 27.125

2007-05-29 12:47:31 · answer #3 · answered by dreamer.rc42 6 · 0 0

To obtain 10% (one tenth) of 271.25, just move the decimal point one digit to the left!

27.125, or 27.13 rounded to the nearest cent.

2007-05-29 12:37:13 · answer #4 · answered by tastywheat 4 · 1 0

exactly... 27.125

to solve this without a calculator ... just multiplies 271.25 for the porcentage and divide it among 100.... like this...

271.25 x 10 / 100 = 27.125

2007-05-29 12:43:59 · answer #5 · answered by MIS . 1 · 0 0

10% is easy - just move the decimal point one place to the left. Hence the answer is $27.125

2007-05-29 12:38:48 · answer #6 · answered by Anonymous · 0 0

$271.25 x 10%
= $271.25 x (10/100)
= $271.25 x 0.1
= $271.25 / 10
= $27.125
and this rounds up to
$27.13

2007-05-29 12:48:08 · answer #7 · answered by Pete S 3 · 0 0

$27.125 just move the decimal point 1 place to the left

2007-05-29 12:36:36 · answer #8 · answered by bobthebrowser 6 · 1 0

move the decimal left one place
$27.13

2007-05-29 12:39:32 · answer #9 · answered by ignoramus 7 · 0 0

10/100 *271.25

= 0.1 * 271.25

= 27.125 (shift it by 1 decimal place...)

2007-05-29 12:40:20 · answer #10 · answered by hate players 2 · 0 0

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