# Questions tagged [fractions]

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### For which fractions is it standard practice to specify using 'over' instead of '-ths'?

For which fractions is it standard practice to specify using 'over' instead of ordinals? For example, we read 5/16 as 'five-sixteenths' but 100/151 as 'one hundred over one hundred fifty one'. ...
38 views

### Which number to pluralise

Do you say 'eights-and-a-half' or 'eight-and-a-halfs' when asking whether a person has that size in shoes or stockings?
107 views

### how to incorporate mixed fractions into English

For example, when writing a recipe which should you use? one and a half cup one and a half cups one cup and a half a cup and a half a cup and half three halves of a cup Also, if you were to use ...
1k views

### Can you use “a” before “1/4” when there is no unit following?

I know you can say things like "a 1/4 inch hole" and similar, where the article belongs to the noun and not to the quarter. A colleague of mine is about to publish something like "a 1/4 of the people ...
24k views

### How to pronounce fractions larger than a twentieth, where the last digit of the denominator is a 1 or a 2? i.e. one thirtieth is to 30 as _ is to 31

Disclaimer: I speak British English. I've noticed a lot of differences between the way Americans and Brits pronounce numbers.1 Since the question concerns this, I thought it might be appropriate to ...
6k views

### Do people “go half/halves” on something?

If two people want to buy a car together, would they go half on the car or halves. Example: Let's go half on this car or Let's go halves on this car?
490 views

### Term for numbers that have at least one non-zero significant digit after the decimal point?

So, a number that is nothing but fractions is "fractional". A number that has a whole number and a fraction is "mixed", if you want to call it that. And the portion after the decimal point is called ...
1k views

### Is there a fraction prefix for “(one-)third”?

I am a mathematician, working with things called 1⁄k-regular polytopes, dubbed thus by Conway. For the case of k = 2, as in ½-regular, it is naturally pronounced and written half-regular. However, I ...
1k views

### Any compact ways to say “reduce the model to less than 25% of its original size”?

As the title of the question requests, are there any compact ways to say to reduce the model to less than 25% of its original size? The original phrase looks weird.
31k views

### How to say fractions like “7/8” or “546/823”

I have come across the following three spoken variants for the fraction ⅞: Seven by eight Seven over eight Seven into eight I am also aware of seven-eighths but I don't want to use that as it isn't ...
5k views

### What do you call a fraction that cannot be written as a finite decimal?

For example, the fraction ⅓ cannot be written, because it repeats infinitely (0.33333333... etc). Is there a particular word for numbers that cannot be written directly, but must be expressed as ...
2k views

### Why are decimals read as fractions by some cultures?

I find it very strange that the top results on Google for "how to read decimal" give me a very strange way to read them - as fractions. I have learnt to read the digits individually and it makes a ...
10k views

### Correct use of “x times lower”

In scientific writing numbers are often compared and if something is twice the size of something else, let's say A is 13 to 17 times the size of B this can be written as A is 13–17 times ...
28k views

### “Half” or “A Half”

This argument has come up at work, and I actually found it pretty interesting. My colleague is arguing that you might say "a quarter of a pizza", whereas you'd just say "half of a pizza" rather than "...
332 views

### How to punctuate math fractions?

I was doing the Writing and interpreting decimals exercise on Khan Academy and was asked the following question: What is nine and three hundred two thousandths in numerical form? I read it as "...
12k views

### “Ten times fewer the number” versus “one-tenth the number”

Lately I've been hearing and reading statistics that are communicated in wording that, frankly, confuses me. Forgive me for not citing specific instances, but I can give a hypothetical statistic that ...
51k views

### “Three quarters” vs. “three fourths”

To express a fraction of 3 out of 4, how and when would you use three quarters, and when would you use three fourths? To me, three quarters is what I would have used all the time — but I'm not a ...
46k views

### Why does “one half” have no hyphen, but “two-thirds” does?

I often see the fraction ⅔ written with a hyphen, but I never see ½ written with one. Is it correct to have the hyphen in two-thirds, and if so why don't we write one-half?
10k views

### Is it proper to use ordinal suffixes on fractions?

I know in more formal writing, spelling out fractions is preferred (e.g. two-thirds), and in math no suffix is used, but I frequently see ordinal suffixes being used on fractions (e.g. 2/3rds), even ...
2k views

### Hyphenating spelled-out fractions with large numerators and/or denominators

I find myself in the awkward position of needing to systematically spell out fractions where the numerator, the denominator, or both have three or more digits, and I'm not sure about the hyphenation. ...
331 views

### What is the correct way to pluralize improper fractions?

Say, for example, I'd like to express that I have four complete six-slice pizzas and one with five out of six slices. Would I say "I have 29/6 pizzas"? "4 and 5/6 of a pizza" for mixed fractions?
47k views

### What are the rules about using 'half of' with plural nouns?

Here are some sentences with 'half of' and plural nouns that I consider to be well-formed: Half of all films are a waste of celluloid. Half of users surveyed said they preferred the old product. ...