Because decimals are a form you use regularly like with money, but with fractions, its not used all the time such as a decimal is used.
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Because that it s harder to work out percentages than fractions and decimals
Decimals and percentages are easier to compare than fractions - particularly if they are unlike fractions. That does not explain why percentages are required when we have decimal number and there is no good answer to that!
I Think Decimals Are Better Than Fractions
Because percentages are essentially the numerators of fractions with the same denominator, 100.
Yes. Convert the fractions to a common denominator, then you can easily compare. Or convert them to decimals - that's easy with a calculator. That also lets you compare easily.