How do you write numbers with apostrophes?

Rule to Remember Numbers can be shortened by adding an apostrophe in place of the omitted number. An apostrophe and s are also used to form the plural of letters, numbers, signs, and words referring to words. Correct: The word Mississippi has many s’s.

Do you use an apostrophe in its possessive?

The word its (with no apostrophe) is a possessive pronoun and therefore never takes an apostrophe. The word you’re is a contraction and should be used only in place of you are. The word your is a possessive pronoun and never takes an apostrophe.

How do you write 20s?

No apostrophe. The same rule applies when you are referring to a decade, say, the 1920s. It is absolutely fine to put a letter after a number without an apostrophe between. If, however, you decide to drop the 19 from 1920s, you would insert an apostrophe to show that something is missing: the ’20s.

What does an apostrophe mean after a number in math?

The apostrophe symbol is used in math to denote the derivative function. In plain language, this represents the derivative of the function f(x).

Where do you put the apostrophe in a name?

When indicating the possessive, if there is more than one owner add an apostrophe to the plural; if there is one owner, add ‘s to the singular (The Smiths’ car vs. Smith’s car). If the possessive involves a last name ending with “s” or “z,” you can add either. Special rules apply for classical and biblical names.

Is it 50’s or 50s for age?

There’s no requirement for the apostrophe before the “S” in decade names like 50s and 60s, since there are no omitted letters, though it’s also acceptable to include one. The term may be written “’50s” since “19” is being omitted, but “50s” is fine too.

Is it 40s or 40’s for age?

Q. Which is the proper spelling of a generic age: 30s and 40s or 30’s and 40’s? A. Chicago’s preferred style is thirties and forties, but if you need to use numerals, we recommend leaving out the apostrophes.