Some people find rational fractions easier, others prefer decimals fractions. For some purposes rational fractions are simpler, for others decimals are easier. So there is no simple answer.
Change the decimal into a fraction or the easier way is to turn the fration into a decimal, then multiply.
Put fractions in decimal form. That way it is much easier to compare and order them.
Decimals until you get to values with over nine decimal places, then fractions are more exact
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!
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.
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.
If we didn't have decimals, fractions and percentages math would be impossible. Try answering 1.7 - 0.6 without a decimal, and get the right answer. It has not made math easier or harder, it is an element we need.
All rational fractions.
You can compare two fractions by converting them to a common denominator - but if you need to compare several fractions, it would be easier to write each fraction as a decimal, with several digits after the decimal point, then compare the decimals. Oh Yeah And When I Have A Question No One Effen Answeres It!
To be frank, when you are subtracting fractions, it is easier to put them into decimal form. Therefore, all they are asking is 12 - .75 which is really 11.25.
Fractions
The three fractions whose decimal equivalent is 0.40 are 4/10. 8/20 and 16/40. There are many more fractions that would have the same decimal result.