It is considered untidy to start sentences with figures.
Twenty-five UFOs were sighted in 1996.
This is considered tidier than the version below.
25 UFOs were sighted in 1996.
When writing numbers in full, hyphenate all numbers between 21 and 99 (except those divisible by 10).
234 (two hundred and thirty-four)
This is correct as "thirty-four" is hyphenated.
234 (two-hundred and thirty-four)
Wrong - "two-hundred" should not be hyphenated
234 (two hundred and thirty four)
Wrong - "thirty-four" should have a hyphen
When writing numbers in full, hyphenate all numbers between 21 and 99 (except those divisible by 10).
21,347 (twenty-one thousand three hundred and forty-seven)
This is correct as "twenty-one" and "forty-seven" are hyphenated.
21,347 (twenty one thousand three-hundred and forty-seven)
Expressions like "four-and-a-quarter" are hyphenated when used as adjectives (e.g. three-and-a-half million people).
Put all the flour in the bucket and add 2-and-a-half dozen eggs.
Expressions like these are compound adjectives and should be hyphenated.
Put all the flour in the bucket and add 2 and a half dozen eggs.
It is considered untidy to start sentences with figures.
Three-and-a-quarter million pounds were stolen from the vault.
This is considered tidier than the version below, which starts with a figure.
3-and-a-quarter million pounds were stolen from the vault.
