Different representation are better for different purposes.
they all show parts of a whole number
they all can be used to find the answer to the same wole number
Percents are basically decimals, and we use decimals as numbers with extra, tiny proportions. Percents are just ways to make those decimals into a whole, more friendlier number. But, percents can also be made with decimals as well.
They are both part of a larger number
Decimals and percents may be converted also. 1.5 = 1 and 1/2 = 3/2 = 150%
Whole numbers are positive numbers and there are no fractions or decimals.
The fraction 1/3=0.3333333... In this case it is better to use fractions just like in all cases. There will be no case when decimals will work better than fractions however, if a test says to use decimals; USE THEM!
fractions are represented in form of decimals
Accountants typically convert fractions to decimals. They do this by dividing the fractions and getting a decimal number. Decimals are easier to work with in accounting.
They can show the same number, just in different ways. You can convert fractions into decimals or decimals into fractions.
A whole number.