In some cases, dividing by the smallest mole amount doesn't give a whole number for every element. Sometimes, you might encounter a common fraction (in decimal format) and will need to multiply each element by the denominator of that fraction to make everything a whole number Here are some common fractions in decimal format: Decimal (When rounded to 2 places) Fraction Multiply Each Number by this: xx.00 none no need to multiply by anything if each quantity ends with this xx.20 5 xx.25 4 xx.33 3 xx.40 5 xx.50 2 xx.60 5 xx.66 3 xx.75 4 xx.80 5