How should I read 4/21 when the denominator is 21?

Is it four twenty-first or four twenty-firsts?

I know we can say four over twenty-one but I'd also like to know some other ways to read the fraction.

Thank you!

- Thread starter emma.learns
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How should I read 4/21 when the denominator is 21?

Is it four twenty-first or four twenty-firsts?

I know we can say four over twenty-one but I'd also like to know some other ways to read the fraction.

Thank you!

What about 4/20?Four twenty-firsts. (That's averyweird fraction)

A/one fifth.What about 4/20?

How would you read it?A/one fifth.

A [pause] one fifth

A over one fifth

A by one fifth

Four twenties

Or 'four twentieths'. But this is unlikely, as it's unlikely anyone would write the fraction '4/20', without further reducing it to '1/5'.

If you're reading it the way it's written, you can use the

What would you say about my four suggestions in #5 - are they correct?

Or 'four twentieths'. But this is unlikely, as it's unlikely anyone would write the fraction '4/20', without further reducing it to '1/5'.

4/21 is not so easy. "Four twenty firsts" sounds wrong, so I think I would say "four twenty oneths" even though that sounds ridiculous.

It should be obvious from the suggestions we have been giving that the examples in Post 5 are incorrect.What would you say about my four suggestions in #5 - are they correct?

4/21 would not be read as "four by twenty-one" in the UK.

How is it read in the UK?4/21 would not be read as "four by twenty-one" in the UK.

In the U.S. we would definitely say four twenty-firsts.Four twenty firsts" sounds wrong, so I think I would say "four twenty oneths" even though that sounds ridiculous.

We would definitely not say 4 by 21. Those would be the dimensions of a rectangle.

See post #2.How is it read in the UK?

The usual Indian English way of saying it is with "by" instead of "over", which explains Semeeran's question. (If you're reading it the way it's written, you can use thecardinal:one over five, two over ten, four over twenty.

I see. Thanks.See post #2.

Do you also read "4/21" as "four over twenty-one" in BE?

Is the use of "by" and "over"

Thanks.

If it were a common fraction we (USA) would say:I see. Thanks.

Do you also read "4/21" as "four over twenty-one" in BE?

- Three sixteenths
- Five thirty-seconds
- nine sixty-fourths
- etc.

But for 4/21 it would be awkward to say "four twenty-firsts" (better than "four twenty-oneths.")

If I were pressed to use the fraction then I would also say "four over twenty-one", though in a sentence it really does not work.

It's a four over twenty-one.

The above sounds really weird to me, versus below which sounds fine:

It's a three sixteenths.

That's possible. But it is a very unusual fraction. I cannot ever remember dividing anything into twenty-firsts. I have rules that measure twentieths, twenty-fourths and thirty-seconds of an inch, but I've never seen one that can measure twenty-firsts.Do you also read "4/21" as "four over twenty-one" in BE?

It presumably wouldn't arise from a measurement system, but rather from some formula like a²/(b*c), in a particular situation where a=2, b=7, and c=3.That's possible. But it is a very unusual fraction. I cannot ever remember dividing anything into twenty-firsts. I have rules that measure twentieths, twenty-fourths and thirty-seconds of an inch, but I've never seen one that can measure twenty-firsts.

And I can't really imagine saying it any way other than "four over twenty-one."

It is a meaningless measurement. You have the "4/21". What do you do with it? You cannot measure it or transfer it to another surface or product. So if you don't convert it to decimal equivalent (inches or metric) it is just a number and not a usable measurement.It presumably wouldn't arise from a measurement system, but rather from some formula like a²/(b*c), in a particular situation where a=2, b=7, and c=3.

And I can't really imagine saying it any way other than "four over twenty-one."

14 inches and 4/21".

And how do I measure that?

What? You don't have a 21th measuring tape? What kind of carpenter are you?

Who ever said it has to be a measurement in the first place? It could be the first derivative of some curve.It is a meaningless measurement.

OK. I deal with measurements. This may work for other fields.Who ever said it has to be a measurement in the first place? It could be the first derivative of some curve.

In pure math you run into fractions of all kinds. You have to pronounce them whether they are used to measure anything or not.

4/932 = four nine-hundred and thirty-seconds

*that* way. Do you have a math background?

4/932 = four nine-hundred and thirty-seconds

And I speak American English also and can't ever imagine saying itAnd I can't really imagine saying it any way other than "four over twenty-one."

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Yes, I majored in it.And I speak American English also and can't ever imagine saying itthatway. Do you have a math background?

I wasn't a math major but took a lot of high level college math (very near Chicago) and can't recall ever hearing people using that form. Granted, you don't talk about a lot of specific fractions in college level math.

How would you say this problem out loud?

5/6 + 4/21 =

How would you say this problem out loud?

5/6 + 4/21 =

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That's how I'd say it too in this context of already knowing we're talking about fractions.It presumably wouldn't arise from a measurement system, but rather from some formula like a²/(b*c), in a particular situation where a=2, b=7, and c=3.

And I can't really imagine saying it any way other than "four over twenty-one."

3/8 = three over eight? [saying fractions]

how to read fractions??

Reading fractions [saying]

saying fractions with larger numbers like 238/1978

Thank you all for the input

Ditto.4/21 is not so easy. "Four twenty firsts" sounds wrong, so I think I would say "four twenty oneths" even though that sounds ridiculous.

Or a multiplication problem.We would definitely not say 4 by 21. Those would be the dimensions of a rectangle.