Do You Spell Out 15? Do you spell out 15? spelling out numbers follows the general rules below: Spell out numbers below 10. Numerals should be used for numbers 10 and above, but numbers nine and below should be spelled out. Spell out numbers at the beginning of a sentence. Do you write Fifteen or
Do You Write Out Numbers In Chicago Style? Do you write out numbers in Chicago style? Spell out numbers zero through one hundred. Use numerals for numbers over one hundred. Spell out certain round numerals, specifically: whole numbers one through one hundred followed by hundred, thousand, or hundred thousand), except in monetary amounts or percents.