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# Why should there be percentages when a number can be expressed as a fraction or a decimal?

Updated: 9/21/2023

Wiki User

12y ago

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!

Wiki User

9y ago

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Q: Why should there be percentages when a number can be expressed as a fraction or a decimal?
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Related questions

### What are the difference between decimal in rational and decimal in irrational?

A decimal rational number can be expressed as a fraction A decimal irrational number can not be expressed as a fraction

### How can you tell if a decimal is an irrational number?

When a decimal can't be expressed as a fraction then it is an irrational number.

### What are some examples of terminating decimals?

Any number that can be expressed as a fraction can also be expressed as a terminating decimal and a non terminating decimal can't be expressed as a fraction and so therefore it is an irrational number.

### What are some examples terminating decimals?

Any number that can be expressed as a fraction can also be expressed as a terminating decimal and a non terminating decimal can't be expressed as a fraction and so therefore it is an irrational number.

### Why can a terminating decimal always be written as a decimal fraction?

Because a terminating decimal is a rational number that can also be expressed as a fraction

### What is 12.5 as a decimal?

The number 12.5 is already expressed as a decimal fraction. Expressed as a vulgar fraction, it is equal to 12 1/2, or twelve and a half.

### How do you convert decimals to dollars?

Converts a dollar price expressed as a decimal number into a dollar price expressed as fraction. For example, Dollar in Decimal Number is 1.25, Fraction is 32, the Dollar in Fraction will be 1.08.

### How do I express a fraction or mixed number as a decimal?

Convert the mixed number to an improper fraction. Any fraction can be expressed as a decimal by dividing the denominator into the numerator.

### What is one eighth as a fraction?

The number 1/8 is already expressed as a proper fraction. Expressed as a decimal fraction, it is equal to 0.125.

### Is 7 over 5 as a fraction a rational or irrational number as a decimal?

If the decimal number can be expressed as a fraction (with one whole number over another), then it is a rational decimal number. So 7/5 is a rational number, and remains as such even if expressed in decimal form (of 1.4).

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### Decimal number eight and four-tenths?

Expressed as a decimal fraction, this is equal to 8.4.