Write the numbers one to nine as words. Write 10+ as numerals, except at the start of a sentence (or, even better, rearrange the sentence).

Twenty-three students responded to the survey.
The survey had 23 responses from students.
The class runs for seven weeks.
23 students responded to the survey.

Use commas to separate thousands.

FedUni has more than 5,000 students.

Use the words ‘per cent’ not the % symbol (% can be used in tables and diagrams to save space).

More than 83 per cent of students prefer us to contact them by email.

Separate spans of numbers, including years and times, with an en-dash’.

4–6 pm