Sums of money are usually expressed in numerals, except when they refer to round or indefinite amounts or are used in a formal or legal context:
Use the following forms:
The abbreviations B for billion, M for million and K for thousand are often encountered, especially in newspaper headlines. Avoid them in formal writing. Note that there is no space between the numeral and the letter:
When dollar amounts are used with SI symbols, the following forms are required:
Place the dollar sign before the numeral in question.
For representation of dollar amounts in Canadian and other currencies, see 5.26 Other considerations.
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