There are times and places where formal punctuation, grammar, or style are not called for and I think those times include numerical responses and singing.
- If your topic makes little use of numbers, "you may spell out numbers written one or two words" (Gibaldi 98). Otherwise, use arabic numerals.
- If your writing contains the recurrent use of numeric statistical or scientific data, use numerals for those numbers but write out other numbers in the text if you can do so in one or two words.
- Do not mix numbers that are spelled out with symbols, write out the term for the symbols as well. For example, write: 45%, or forty-five percent; $20 or twenty dollars.
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