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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
a fifth of
Grammar usage guide and real-world examplesUSAGE 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
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
A fifth of MEPs?
News & Media
A fifth of voters remain undecided.
News & Media
A fifth of the class was foreign.
News & Media
A fifth of these come from Western Europe.
News & Media
Women make up a fifth of participants.
News & Media
That's a fifth of its investment wealth.
News & Media
"We'll be manufacturing a fifth of that".
News & Media
A fifth of us are on Twitter.
News & Media
Indonesia spends about a fifth of its budget on them.
News & Media
A fifth of the country flooded by torrential monsoon rains.
News & Media
Naval intervention disrupts around a fifth of the attacks.
News & Media
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.
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.
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.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
one-fifth of
Uses the numerical form instead of the article "a".
20 percent of
Expresses the same proportion using percentage instead of a fraction.
a fifth part of
Replaces "of" with "part of", maintaining the meaning.
around a fifth of
Introduces slight vagueness in the fractional quantity.
approximately 20% of
Adds the element of approximation to the proportion.
one part in five of
Expresses the fraction as a ratio.
a share equal to a fifth of
Emphasizes the distribution aspect represented by a fifth.
a portion consisting of one fifth
Rephrases the idea using a descriptive form, emphasizing the fractional part.
a fifth in terms of
Used to indicate proportion in specific parameters.
a small fraction of
Implies "a fifth of" is just a small part of the whole.
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"?
Alternatives include "20 percent of", "one-fifth of", or "a small fraction of depending on the desired level of precision".
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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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested