# Numbers

## Numbers

• Spell out all numbers from one to nine; use figures for any number 10 or above, except at the beginning of a sentence. This includes ordinal numbers: first, 1st; 20th, not twentieth, unless it's an official title or data point).
• Do not use superscript in ordinals. (e.g. 20th, not 20th).
• Use figures for decimals or compound fractions.
• Numbers in the millions should be written out as a combination of words and figures.
• Don’t use "over" or "under" to describe numbers. Use "more than" or "less than".
• Use figures in sequences such as chapters, acts of a play, school grades, highways, etc.
• Use figures in ordered lists.

Examples:

• Unit 12
• first-year students
• teams of 16
• 20 million people
• 6 1/2 weeks to go
• more than $4.5 million in sales • children in Grade 4 • Act 2, Scene 3 of Hamlet See also Dates and Time ## Phone numbers Use this format: 519-888-4567, ext. 35719 For international audiences, add a "+1-" in front of the telephone number. (Country code for Canada.) E.g. +1-519-888-4567 ## Money • When referring to amounts of money, use a singular verb. • Do not use unnecessary zeroes. • Don’t use "over" or "under" to describe amounts. Use "more than" or "less than". • Don’t use periods in national currency designations. • Hyphenate millions of dollars when part of a compound modifier. Examples:$7 (not $7.00).$65 CAD, $52 USD. More than$5 million was raised for the fund for writers. Construction of the $70-million building. The$33-million donation.

View the ISO 4217 Currency Codes to see international currency designations.