52.1 as a fraction is 521/10
0.521 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its rational equivalent is 521/1000 which cannot be simplified.
521 = DXXI
521/1000
0.521 = 521/1000.
First you need to make a fraction, which I think is easiest. Fractions, decimals, and percents are interchangable. Write 6/521. This is the same as 6 divided by 521. (The fraction bar also means divide.) Which equals .0115, rounded off. Now multiply this by 100, (percent means per cent, cent latin for hundred) to convert it back to percentages. Tada, 6 is 1.15% of 521!
10.42 as a fraction is 521/50 or 10 and 21/50.
521,000,000,000
10.42 = 1042/100 = 521/50 as an improper fraction in its simplest form
52.1 = 52 and 1/10 = 521/10
It is 521.
521/1000
The answer will depend on what the fraction is.