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Writing Tips on Formatting Numbers

Formatting Numbers

Do you have questions about formatting numbers? There are two main rules that apply to writing numbers:

1. Write out single-digit numbers (one through nine) and use digits for numbers for 10 and higher, or

2. Write out one hundred and everything less. Use numbers for everything greater than one hundred.

Some style guides say to write out common numbers and use digits for all others. This would result in:

  • one thousand
  • 1,051
  • one million
  • 999,157

Of course, they’re exceptions and special cases. One example is that if a sentence begins with a number, always spell it. If this looks awkward, rewrite the sentence so that it doesn’t start with a number. In this case:

One thousand, two hundred and fifty-seven people were present . . .

becomes

The attendance was 1,257 . . .

Follow these pointers on formatting numbers to cover the most common situations.

Learn more about writing and publishing in Peter’s new book: The Successful Author: Discover the Art of Writing and Business of Publishing. Get your copy today.

Peter Lyle DeHaan, PhD, is an author, blogger, and publisher with over 30 years of writing and publishing experience. Check out his book The Successful Author for insider tips and insights.

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