Expressing decimal as percent

[azajewel]

I've forgotten how to express a decimal as a percent? Can someone help me? 0.004 expressed as a percent is?????

 

[BigGlenntheHeavy]

\(\displaystyle If \ 1 \ is \ 100\%, \ then \ .004 \ is \ what \ \%?\)

\(\displaystyle If \ in \ doubt, \ use \ a \ direct \ proportion, \ viz.,\)

\(\displaystyle \frac{1}{100} \ = \ \frac{.004}{x}, \ x \ = \ (100)(.004) \ = \ .4\%\)

 

[mmm4444bot]

To convert a percent in decimal form to the form that's written with a percent sign, multiply by 100.

EGs:

0.05 is 5%

0.0625 is 6.25%

0.44 is 44%

1.9 is 190%

:idea: Do you know? Multiplying a decimal number by 100 is the same as shifting the decimal point two places to the right.

Cheers ~ Mark

 

[lookagain]

\(\displaystyle If \ 1 \ is \ 100\%, \ then \ .004 \ is \ what \ \%?\)

\(\displaystyle \frac{1}{100} \ = \ \frac{.004}{x}, \ x \ = \ (100)(.004) \ = \ .4\%\)

You can't have equality between your second to the last step and the last step. \(\displaystyle (100)(.004) = .4 \ne .4\%\)

 

[BigGlenntheHeavy]

\(\displaystyle \frac{1}{100\%} \ = \ \frac{.004}{x}, \ is \ that \ better.\)

 

[Denis]

Go stand in the corner, BigG :shock:

 

[b.morales99]

Its as simple as moving the decimal point two places to the right.

You might wanna try this video for more a better explanation and practice as well.

http://www.youtube.com/watch?v=0Y6W6iu8HTw