0.5=5/10=50/100=50%.

Write 0.5% as a decimal and as a fraction: 0.5% = 0.

__00__5 Again, since percent means per 100, you can change a percent to a fraction by simply putting the percent over 100: 0.5% = .5/100 Remember, we cannot leave a decimal in the numerator so we must rewrite it as a whole number. To do that simply move the decimal as many places to the right as required to make it a whole number, then add as many zeros, as places moved, to 100 in the denominator .5/100 = 5/100__0__(add 1 zero to 100)__The final step is to reduce the fraction to lowest terms: 5/1000 = 1/200__