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Spelling Out Numbers 

Spelling Out Numbers

Numbers and Percentages

Stephen J. Lurie

and Margaret A. Winker

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PRINTED FROM AMA MANUAL OF STYLE ONLINE ( © American Medical Association, 2009. All Rights Reserved. Under the terms of the license agreement, an individual user may print out a PDF of a single chapter of a title in AMA Manual of Style Online for personal use (for details see Privacy Policy). 

Subscriber: null; date: 24 October 2016

Spelling Out Numbers

Use words to express numbers that occur at the beginning of a sentence, title, subtitle, or heading; for common fractions; for accepted usage and numbers used as pronouns; for ordinals first through ninth; and when part of a published quote or title in which the number is spelled out. When spelling out numerals, hyphenate twenty-one through ninety-nine when these numbers occur alone or as part of a larger number. When numbers greater than 100 are spelled out, do not use commas or and (eg, one hundred thirty-two).

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