# Numbers

### General Rules:

If a number is awkward or lengthy to write out (usually those numbers that require three or more words), then use the number symbols.

Examples:

use 155

notone hundred and fifty-fiveuse 1234

notone thousand two hundred and thirty-four

Write out any number that is two words or shorter:

use two

not2use forty-one

not41

Note that the numbers one through nine, when coupled with multiples of ten (twenty, thirty, forty, and so on through ninety), use a hyphen to link to the multiple of ten:

twenty-two

thirty-five

### Exceptions:

Feel free to replace even a one-word number with number symbols if numbers in a sequence are potentially confusing

hard to read:In my lifetime, I've seen five three-legged dogs.

easier:In my lifetime, I've seen 5 three-legged dogs.

Use number symbols for dates, addresses, times, statistics or mathematical information, exact money amounts, and other common numeric information.

dates:March 15, 1996

addresses:

10 Peyton Place

Washington, MA 01258

**Tip:** In a sentence, use a comma after the year or the state when more of a sentence follows.

times:10:00 a.m.

statistics/ math. info.:3/4 of all doctors recommend pills over liquids

money:$5.35

text references:page 2, chapter 9, paragraph 8, line 3

Note: The information on *numbers* follows MLA (Modern Language Association) and Diane Hacker's *A Writer's Reference* (2003, Fifth Edition) style. Other style manuals have other rules for numbers (e.g., APA- American Psychological Association).