How to say "2100"?

Twenty-one hundred and two thousand, one hundred are both correct. Two thousand *and* one hundred is not.

When I was a kid in school, we were taught that two thousand one hundred was the correct way to say it. As an adult, I’m *far* more likely to hear or say twenty-one hundred.

it depends on the context I think. When talking about money or a specific year, i might say twenty-one hundred. If i was counting something like people, id say two thousand one hundred. I don’t think it matters much which you use though. This is just personally how I speak.

Both are understandable. Personally I'd the second one - but with no "and" between the thousands and hundreds. Especially if you had a number like 2135: saying twenty-one hundred and thirty five makes sense, but is maybe a little less common and takes a second to mentally parse, while two thousand, one hundred and thirty five is more natural.

Definitely twenty-one hundred if you're talking about the year. Otherwise, either works. "Twenty-one hundred dollars" or "two thousand one hundred dollars" are both fine. Though I would say "two thousand one hundred" personally.

Both are acceptable, but the latter is often used for years, street addresses, vehicle and machine models (among other things). It's also common in colloquial expressions of monetary amounts. In mathematics, science, engineering, economics, and data science, it's almost always "two thousand one hundred".

I've been told Brits are less likely to say numbers in the thousands as hundreds, but whenever I've brought that up I've been corrected. Anyways, both are correct. I would say two thousands one hundred is the formal and proper way to put it, but in a typical conversation and *especially* concerning money or stock most people would say twenty-one hundred. I think there are circumstances where people generally will prefer to say one or the other, but that's really in the weeds with it, most people do not pay mind to it whatsoever. Two thousand one hundred has more emphasis, I suppose?

This is partly an American English and British English distinction. Most British (and others, including many North American) speakers would say *two thousand one hundred*. *twenty one hundred* is much more common in America. Another difference is that 115 would be *one/a hundred and fifteen* in BrE, but *one/a hundred fifteen* in AmE.

towanohoh

In normal people say two thousand hundred.

Plenty of people have answered your question but, for some additional information, if 2100 doesn't represent a quantity and is instead part of a code of some kind such as a PIN or part of a telephone number you will hear it as two one zero zero or two one O O.

It seems that Americans say 'twenty-one hundred', but I've always said 'two-thousand one hundred'

Twenty-one hundred or two thousand one hundred.

The latter is more right say in mathematics, but 21-hundred is more spoken colloquially /easier to say and if you are referring to a year, you say hundred, eg nineteen hundred, the seventeen hundreds, by the year twenty one hundred, except for thousands as it’s one thousand ad or two thousand ad (i say ad as opposed to ce cause ce is imo woke and 0CE holds no meaning to anyone, whilst 0AD does religiously (I’m not Christian or anything either)), but you don’t say AD unless you’re talking a topic that either crosses over both eras, eg the Roman Empire, or if it could otherwise be mistaken (you wouldn’t say 9/11 was in 2001AD cause that’s effort). Side tangent over. Both work, thousand then hundred format is more formal and hundred format is more casual or better talking years

Twenty-one hundred. You can usually say two thousand one hundred, but there’s generally no reason to expand it out like that

Both are equally correct

Twenty-one hundred Two thousand one hundred These are acceptable

Twenty-one hundred Two thousand one hundred These are acceptable

Twenty-one hundred Two thousand one hundred These are acceptable

Twenty-one hundred Two thousand one hundred These are acceptable

There is a fascinating [video](https://youtu.be/YBbBbY4qvv4?si=3VAJo1lTLhluHGn6) by Numberphile on this subject, if you're interested.

Twenty one hundred is more informal, while two thousand, one hundred would be the formal or "proper" way to read the number.

In the US or Canada, "two thousand one hundred" or "twenty one hundred" are fine. I think it's much less common in the UK IIRC, not sure about other English speaking countries.

I say two thousand one hundred as if I am ever speaking to someone who doesn’t have English as their first language they will be keyed to listen for the digits 0-9. So throwing in a random seventeen or twenty-four can make it hard to decide.

Both are correct in North America, I think the brits only use the second format for numbers below 1600. Im Canadian and I'd generally default to "twenty-one hundred" If I'm buying a used car for $5660 I'd say "it costs fifty-six sixty". In that context no one would think it costs $56.60 even if we say the same thing for that price

Twunny wun hunnid

twenty one hunnit

You can say twenty one hundred, two thousand one hundred, or two thousand and one hundred. They are all technically correct, but maybe more commonly used in certain contexts.

Two one double zero Twenty one hundred Two thousand one hundred Nine pm All of the above work-

Native British English speaker here, we say ‘two thousand, one hundred’. I would never say ‘twenty-one hundred’.

Honestly, both work as well as the other (except in talking about time, where only twenty-one hundred would work) Two thousand one hundred is, at least in the UK, typically used in younger and scientific circles, while twenty-one hundred is used in older circles, but if you say one or the other everyone will understand what you mean, so say whichever one you're more comfortable with :)

Either.

“Two thousand, one hundred” or “twenty-one hundred” are both fine if you’re talking about a quantity or a year. On the unlikely chance you’re talking about a time, then only ‘twenty-one hundred.’