How do you fraction decimals and percents and all of that

From fraction to decimal:  divide the numerator by the denominator 

From decimal to percent: move the decimal two places to the right. For example: 0.062=6.2%

From percent to decimal: move the decimal point two steps to the left. For example: 56%=0.56

From decimal to fraction: Rewrite the decimal number number as a fraction (example: 2.625=2.6251) an then Multiply by 1 to eliminate 3 decimal places, we multiply numerator and denominator by 10 cubed = 10002.625/1×1000/1000=2625/1000 and don forget to reduce if possible;)

I’d say letter a..