Hyphen with Numbers
Table of Contents
Numbers as a Part of a Compound AdjectiveThere are two ways of using a number as a part of a compound adjective preceding a noun:
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Numbers Aren’t a Part of a Compound AdjectiveThe hyphen isn’t placed if numbers aren’t a part of a compound adjective followed by a noun. For example: “the speech lasted two hours”, “the frying pan weights four pounds” and etc.
- You have to put the hyphen between any number which consists of two words. This rule concern numbers starting from 21 (twenty-one) to 99 (ninety-nine) excluding such numbers as 30, 40, 50, 60, 70, 80 and 90 as they consist of one single word. For example: “fifty-five bottles”, “thirty-two friends” and etc.
- Round numbers that are higher than 99 (ninety-nine) have to be written without the hyphen. For example: “one hundred”, “twelve million”, “three billion” and etc. BUT the number 571 has to be written in the following way “five hundred and seventy-one”, 87000 has to be spelled like “eighty-seven thousand” and etc.
Numbers that Are Used to Describe Someone’s AgeTo talk about someone’s age it is required to use the hyphen with numbers. For example: “My three-year-old son started to talk”. Pay attention to the fact that “three-year-old” is the compound adjective describing the noun “son”.
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Numbers Used while Talking about the Span of the TimeFinally, there is no need in putting the hyphen with numbers when we are talking about the span of the time. For example: “I’ve stayed in Florida for four months”.
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