Numbers
- Spell out one to nine. Use numerals for 10 and above. Exceptions: Use numerals for percentages, decimals, credit hours, GPAs, book sections and pages, quantities combining whole numbers and fractions, and when symbols rather than abbreviations are used for units of measure.
- Use numerals with units
- 4 inches, 5 megabytes
- Use the word percent in formal running text. Use the percent sign in tables and charts.
- Use a comma for numbers with more than three digits unless they represent SAT scores or years.
- Undergraduate estimated tuition for 2009–2010 was $38,570 per semester.- His combined SAT score was 1235.
- Spell out numbers at the beginning of a sentence or rephrase the sentence to avoid beginning with a number.
- Forty-nine students were honored.
- Use numerals without double zeroes with a.m. or p.m. (lowercase letters) to indicate specific times.
- 2 p.m., not 2:00 p.m.
- For GPAs, use only one zero.
- He had a 3.0 GPA.
- For telephone numbers, area codes go in parentheses: (213) 740-2200. Do not break telephone numbers at the end of the line.
- Use numbers for centuries. Don’t spell out.
- 12th century or 7th century.
- Use an en dash with a space on either side for a range of numbers.
- For Academic Policies, see pages 30 – 40 of the Catalogue.