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• 18.0 Numbers and Percentages
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## Common Fractions.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.022.0003
Item type:
section
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 (...

## Measures of Currency.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.022.0007
Item type:
section
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 | Next

## Measures of Temperature.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.022.0006
Item type:
section
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.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.022.0005
Item type:
section
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.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.022.0004
Item type:
section
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 of 4 or More Digits to Either Side of the Decimal Point.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.022.0002
Item type:
section
Commas are not used in large numbers. In 4-digit numbers, the digits are set closed up. For numbers of 10  000 or greater, a thin space is used to separate every 3 digits starting from the right-most integer (or, in numbers with decimals, from the left of the decimal point). For numbers with 5 or more digits to the right of the decimal point, a thin space is used between every 3 digits starting from the right of the decimal point (...

## Use of Numerals.

### in AMA Manual of Style: A Guide for Authors and Editors (11th ed.)

Print Publication Year:
Feb 2020
Published Online:
Feb 2020
DOI:
10.1093/jama/9780190246556.003.0018.021.0002
Item type:
section
In scientific writing, numerals are used to express numbers in most circumstances (eg, 5 not five). Exceptions are the following: ■ Numbers that begin a sentence, title, subtitle, or heading (see 18.2.1, Beginning a Sentence, Title, Subtitle, or Heading) ■ Common fractions (see ...

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