## When to Hyphenate Numbers

Write the numbers 21 to 99 with a hyphen. For example:

thirty-four

sixty-seven

ninety-nine

Hyphens are also used in larger numbers in the thousands and millions places. For example:

45,000 > Forty-five thousand

189,000 > One hundred [and] eighty-nine thousand

234,362,000 > Two hundred [and] thirty-four million, three hundred [and] sixty-two thousand

Note that American English does not use the [and] with larger numbers.

## Hyphenating Fractions

Hyphenate fractions when they are used as adjectives or adverbs. For example:

I had a one-quarter interest in the company.

Opinion varies on whether fractions used as nouns should be hyphenated.

## Words or Numerals

There are no hard and fast rules although most tend to write smaller numbers in words and use numerals for larger numbers. For example:

Four

Forty-five

125

12,089

However, you should be consistent. For example:

Frank and Blake raised five pounds each but, remarkably, Sue raise £1,250.

Would be better written

Frank and Blake raised £5 each but, remarkably, Sue raise £1,250.

It is common to use the convention that applies to the larger number for all the numbers.

Alternating words and numeral forms is sometimes required for clarity. For example:

There were five eight-year-old boys at the party.

There were 5 eight-year-old-boys at the party.