Numbers

In text, write out numbers one to nine (1–9) in full, except when describing:

Ages (6-year-old boy)
Dates (5 August 2008)
Dimensions, weight (2cm, 80kg)
Distances (16km)
Millions/billions (4 million, 8 billion)
Money ($9 or $1.28)
Percentages (15 per cent)
Temperature (7 Celsius)
Times (9.30am)

Numbers 10 and over should be written numerically, except at the start of a sentence ("Forty students attended the seminar"). However, it is better to avoid beginning a sentence with a number. For example, "1654 students began the course this year" is better expressed as "This year, 1654 students began the course".

Numerals for one to nine are acceptable in tables, lists and diagrams or when it would otherwise be confusing. ("The subject requires students to attend three 2-hour classes").

Use a comma to indicate the thousands place in numbers over 10,000. Do not use a comma in numbers under 9999. (This is based on Fairfax style.)

Currencies

If you need to distinguish between Australian and other currencies, use the format $A100 (not A$ or $AU or AUD).

Phone numbers

For phone numbers, use +61 2 in all instances except in publications that specifically target local readers only (that is, internal or within NSW), in which case (02) or no prefix is acceptable depending on context.