As I understand it, numbers up to ten should be spelled out, as in one, two, three, etc. Numbers over ten should be expressed as the numbers themselves, as in 11, 15, 27, etc. Is this correct?
Top answer
I doubt that's a real 'rule', but certainly no one is going to spell out 2,748,612.
— Canadian45
I doubt that's a real 'rule', but certainly no one is going to spell out 2,748,612.
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This is the rule of thumb for business writing. In scientific and technical writing numbers are usually expressed in figures. For general and (non-technical) academic writing, look here: http://grammar.ccc.commnet.edu/grammar/numbers.htm