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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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a fifth of

Grammar usage guide and real-world examples

USAGE SUMMARY

"a fifth of" is correct and usable in written English.
For example, you can use it to describe a portion of something: "He ate a fifth of the pizza."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

A fifth of MEPs?

News & Media

The Economist

A fifth of voters remain undecided.

News & Media

The Economist

A fifth of the class was foreign.

News & Media

The New Yorker

A fifth of these come from Western Europe.

News & Media

Independent

Women make up a fifth of participants.

News & Media

The New York Times

That's a fifth of its investment wealth.

"We'll be manufacturing a fifth of that".

News & Media

The New York Times

A fifth of us are on Twitter.

Indonesia spends about a fifth of its budget on them.

News & Media

The Economist

A fifth of the country flooded by torrential monsoon rains.

News & Media

The New York Times

Naval intervention disrupts around a fifth of the attacks.

News & Media

The Economist
Show more...

Expert writing Tips

Best practice

When using "a fifth of", ensure the context clearly defines the whole being divided. For example, "a fifth of the population" is clearer than just "a fifth".

Common error

Avoid using "a fifth of" without specifying what the fraction refers to. Vague references can confuse your audience and weaken your statement.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

91%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "a fifth of" functions as a quantifier, specifying a fraction or proportion of a whole. Ludwig provides numerous examples demonstrating its use across different domains. This aligns with the "Correct" grammatical status from Ludwig AI.

Expression frequency: Very common

Frequent in

News & Media

65%

Science

18%

Formal & Business

7%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "a fifth of" is a versatile and grammatically sound phrase used to express a quantity representing one part of five. Ludwig confirms its correctness and common usage across various contexts. This phrase is particularly prevalent in news and media, and while suitable for formal settings, it maintains a neutral register. When incorporating "a fifth of" into your writing, ensure clarity by specifying the whole to which the fraction refers. By avoiding ambiguity, you can leverage this phrase effectively to convey proportions and quantities.

FAQs

How can I use "a fifth of" in a sentence?

Use "a fifth of" to denote a quantity that represents one part out of five equal parts of a whole. For example, "A fifth of the students passed the exam."

What is another way to say "a fifth of"?

Is it better to use "a fifth of" or "20 percent of"?

Both "a fifth of" and "20 percent of" are correct and interchangeable. The choice depends on context and desired style. "A fifth of" is more informal, while "20 percent of" is more common in statistical or business contexts.

When should I avoid using "a fifth of"?

Avoid using "a fifth of" when the context requires greater precision. In such cases, providing exact numbers or percentages is better than using fractions. Also, avoid using it when the 'whole' is not clearly defined.

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Source & Trust

91%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: