Abbreviating Number.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
The word number may be abbreviated No. in the body of tables and line art or in the text when used as a specific designator. Do not use the number sign (#) in place of the abbreviation; this could be confused with the hashtag (#) used in social media. The word ...Accepted Usage.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Spell out numbers for generally accepted usage, such as idiomatic expressions. One frequently appears in running text without referring to a quantity per se and may appear awkward if expressed as a numeral. When one may be replaced by a or a single without changing the meaning, the word ...Beginning a Sentence, Title, Subtitle, or Heading.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Use words for any number that begins a sentence, title, subtitle, or heading. However, it may be better to reword the sentence so that it does not begin with a number. Numerals may be used in sentences that begin with a specific year, but avoid beginning sentences with years if possible....Combining Numerals and Words.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Use a combination of numerals and words to express rounded large numbers and consecutive numerical expressions. Previous | Next Rounded large numbers, such as those starting with million, should be expressed with numerals and words. The disease affects 5 million to 6 million people. (Note that the word ...Common Fractions.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Common fractions are written with a numerator and denominator in which both are integers (eg, 1/3, 1/2, 7/8). Where spelled out, simple common (where the numerator and denominator are nonzero integers, eg, 9/10) and nonsimple (when the numerator or denominator contain fractions) fractions are expressed with hyphenated words, whether the fraction is used as an adjective or a noun. Mixed fractions are typically expressed in numerals (...Consecutive Numerical Expressions.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
When 2 numbers appear consecutively in a sentence, either reword the sentence or spell out 1 of the numbers for clarity. Study participants were provided twenty 5-mL syringes. When I first started out as an author, one had to send an envelope with 3 copies of a manuscript and one 3.5-in diskette to submit a manuscript for publication....Decimals.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
The decimal form should be used when a fraction is given with an abbreviated unit of measure (eg, 0.5 g, 2.7 mm) to reflect the precision of the measurement (eg, 38.0 kg should not be rounded to 38 kg if the scale was accurate to tenths of a kilogram) (...Enumerations.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Indicate a short series of enumerated items by numerals run in and enclosed within parentheses in the text (see 8.5, Parentheses and Brackets). The testing format focused on 6 aspects: (1) alertness and concentration, (2) language, (3) naming, (4) calculations, (5) construction, and (6) memory....Measures of Currency.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
For sums of money, use the appropriate symbol to indicate the type of currency (eg, $, €, £, ¥; see 17.5.12, Currency).1 His charge for the medication was $55.60 plus $0.95 for shipping. The equivalent sum in euros was €30. Previous | NextMeasures of Temperature.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Use the degree symbol with Celsius and Fahrenheit measures of temperature but not for Kelvin.1 A space should appear between the number and the degree symbol (see 17.3.8, Spacing). Changes in temperature are expressed as higher and lower and not warmer or colder (...Measures of Time.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Measures of time usually are expressed as arabic numerals (see 13.3, Days of the Week, Months, Eras). When dates are provided, numerals should be used for day and year; the month should be spelled out unless listed in a table. Conventional form for time and dates (11:30 ...Mixed Fractions.
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
Mixed fractions are the combination of a whole number and a fraction into a single, mixed number. They may be used for less precise measurements instead of decimals. These expressions usually involve time. Common fractions are typically spelled out (see 18.1.2, Common Fractions). The surgery lasted 3¼ hours....Numbers and Percentages
Edward H. Livingston
in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)
The Numbers and Percentages chapter of the 11th edition of the AMA Manual of Style tackles the difficult question of when to use numerals and when to use words, and how to combine the two. ...
More
