Revised as of
10 Feb 2024
Who knew numerals could have so many rules! It begins with the types of numerals — cardinals, nominals, and ordinals and then plunges into number structure. Hah, and you thought number structure was all about 1, 2, 3, 4!
Context, circumstance, and/or whether the number is written or spoken will determine how the number is presented.
Exploring Later . . .
You may also want to explore “Amount vs Number vs Quantity” and “Number versus Numeral”“.
Formatting Tips started . . .
. . . as my way of dealing with a professional frustration with words that should have been capitalized or italicized, in quotes or not, what should be spelled out and what can be abbreviated, proper styling for the Latin names of plants, the proper formatting and usage of titles and more in manuscripts I was editing as well as books I was reviewing. It evolved into a sharing of information with y’all. I’m hoping you’ll share with us any questions you’ve had on this subject that have been a bête noire for you from either end.
If you found this post on “Numerals” interesting, consider subscribing to KD Did It, if you’d like to track this post for future updates.
Numerals | |||||||||||||||||||||||||||
Formatting | |||||||||||||||||||||||||||
General Rule: I know this gets really tedious and very mind-numbing. An easy, easy rule could be to simply spell out all arabic numerals 9 and under and use arabic numerals for all arabic numerals 10 and up.
Being consistent is the most important point. Breakdown:
|
|||||||||||||||||||||||||||
Use Arabic Numerals | Spell It Out | ||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AP, APA: 10 through infinity 10, 11, 12, 13 . . . 45 . . . 109 . . . 1,403 . . . Chicago: MLA: |
Writing out numbers: US Rule: Only the number; there is no and twenty-five British Rule: Inserts an and before the tens and units twenty-five Speaking numbers: AP, APA, Chicago: Numbers at the beginning of a sentence are ALWAYS spelled out. Always. It would be better if you reword the sentence so you don’t start with a number. Well, okay, except if you are doing a text-message dialog. Chicago: MLA:
You don’t hyphenate the hundreds or thousands. |
||||||||||||||||||||||||||
Three Types of Numbers | |||||||||||||||||||||||||||
Cardinal Number | Definition: A counting number, a noun. A number used to count that indicates how many of something there is, is the common usage (Cardinal). If you’re a math geek, then things get much more complicated . . . and you’re on your own! | ||||||||||||||||||||||||||
Return to top or post contents |
1 2 25 105 162 2,003 1,984 ++ |
||||||||||||||||||||||||||
Nominal Number | Definition: A number used only as a name, or to identify something, but not as an actual value or position. | ||||||||||||||||||||||||||
Return to top or post contents |
the eight ball on a billiard table a phone number: 555-1212 a product number: MV-PV138A4 |
||||||||||||||||||||||||||
Ordinal Number | Definition: Tells the position of a number | ||||||||||||||||||||||||||
Return to top or post contents |
1st 2nd 104th 32nd ++ |
||||||||||||||||||||||||||
Ordinal with Letter | Rule: Italicize when using a letter in place of a number, but leave the suffix in roman (Chicago, 9.9). | ||||||||||||||||||||||||||
Return to top or post contents |
to the nth degree | ||||||||||||||||||||||||||
Styling with Numbers | |||||||||||||||||||||||||||
Address |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Highways | Rule: State, federal, and interstate highways use arabic numerals (Chicago, 9.55). | ||||||||||||||||||||||||||
Return to top or post contents |
County LLC Highway 32 Interstate 94 I 94 Wisconsin 34 US Route 22 US 22 |
||||||||||||||||||||||||||
Apartment Number | Rule: Use arabic numerals and/or uppercase letters (Chicago). | ||||||||||||||||||||||||||
Return to top or post contents |
She’s in apartment 14C on 150th Street. | ||||||||||||||||||||||||||
Building |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Age |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Alphabetizing | Rule: Spell it out IF it’s an isolated item. Yep. There’s numerical sequence, and then there’s alphabetization. Numbers are alphabetized as if they were spelled out.
If there are a series of numbered items, stick with numerical sequence. |
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Book | |||||||||||||||||||||||||||
Parts of Books | Ebooks are treated the same except where noted. | ||||||||||||||||||||||||||
Appendix | Rule: If more than one appendix is used, they should be labeled consecutively with either numbers or letters followed by a unique title.
Ebook: The appendix requires a number and should be hyperlinked. |
||||||||||||||||||||||||||
Return to top or post contents |
Appendix 1 Tables Appendix 2 Maps Appendix A . . . |
||||||||||||||||||||||||||
Chapter | Rule: Chapters are always numbered consecutively; to have a chapter, there must be at least two (Chicago, 1.66).
Ebook: The chapter requires a number and should be hyperlinked. |
||||||||||||||||||||||||||
Return to top or post contents |
Chapter 9 Chapter 10 |
||||||||||||||||||||||||||
Endnote | Rule: Within the text, MLA uses superscript arabic numerals after the punctuation of the phrase or clause to which the note refers.
Ebook: Endnotes should be hyperlinked. |
||||||||||||||||||||||||||
Return to top or post contents |
MLA: The theory that Hogwarts does exist can be traced back to Pliny the Elder.3 Since World War II ended, the ignorant have insisted that the Holocaust is a fabrication8 — a statement that shows their bigotry. Designs three through five have some flaws in their stability5; and yet, the design for the new dual-layer bridge in four has some merit. |
||||||||||||||||||||||||||
Endnote List | Rule: In the back matter, MLA uses arabic numerals that correspond to the in-text citations. Start with the endnote number, a period, and a space before providing the substance of the endnote. The first line in each note is indented and double-spaced. | ||||||||||||||||||||||||||
Return to top or post contents |
3. See Smithings in his analysis on magic in Ancient Rome. 8. On Holocaust denial, see Niewyk’s The Holocaust: Problems and Perspectives of Interpretation. See also documents at the Center of Contemporary Jewish Documentation; for a contrasting view, see Harry Elmer Barnes. 5. Several studies on best-practices endorse the stability benefits in this design. See HNS 780.04(5),06; Schneider 14:23.5; Tallings, Friestner, and Allens 34-43. |
||||||||||||||||||||||||||
Footnote | Rule: Always use arabic numerals for footnotes and always place the footnote after the ending punctuation.
Also see rules on Superscript & Subscript. |
||||||||||||||||||||||||||
Return to top or post contents |
Becky Burckmyer has useful information in her book, Awesome Grammar. | ||||||||||||||||||||||||||
Front Matter | Rule: Generally use lowercase Roman numerals.
Ebook: Due to the different display sizes of eReaders and readers who change font sizes, page numbers are irrelevant and hyperlinks are better used. |
||||||||||||||||||||||||||
Return to top or post contents |
i, ii, iii, iv, +++ | ||||||||||||||||||||||||||
Pages | Rule: Page numbers use arabic numerals for the most part and begin after the front matter, continuing consecutively through the book. Do not use a comma on 4-digit-and-up numbers. See also Front Matter regarding front matter pages and Volume regarding pagination for multiple volumes.
Ebook: Due to the different display sizes of eReaders and readers who change font sizes, page numbers are irrelevant and hyperlinks are better used to locate chapters, figures, tables, etc. |
||||||||||||||||||||||||||
Return to top or post contents |
1, 2, 3, 4, 5 . . . 1512 | ||||||||||||||||||||||||||
Paragraph Number | Rule: Generally used in a technical manual which undergoes annual (or more frequent) revision, it is more practical to use a paragraph number as opposed to a page number.
Ebook: Use hyperlinks. |
||||||||||||||||||||||||||
Return to top or post contents |
The Chicago Manual of Style uses paragraph numbers such as “18.12 Locators” to allow the cross-references to remain the same throughout different editions. | ||||||||||||||||||||||||||
Part | Definition: A book may be divided into parts, each of which must contain at least two chapters. Part numbers and chapter are consecutive.
Rule: Generally uses arabic numerals. Form: Part #: Chapter Title A.k.a. section |
||||||||||||||||||||||||||
Return to top or post contents |
Part 2: Word Confusion Endings | ||||||||||||||||||||||||||
Section | Rule: If a section is cross-referenced from elsewhere within the book, it should be numbered using double or multiple numeration, i.e., begin with XX.1 with each new chapter or XX.xx.1, etc., with each new subsection or lower. This is extremely useful in scientific or technical books.
Ebook: The section still requires a number and should be hyperlinked. |
||||||||||||||||||||||||||
Return to top or post contents |
4.2 15.1 9.15.2 7.8.9.13 |
||||||||||||||||||||||||||
Volume | Rule: Use roman numerals or spell out the number. BUT if using the volume number in documentation, use arabic numerals.
Documentation Form: vol. XX |
||||||||||||||||||||||||||
Return to top or post contents |
Volume One Volume V vol. 12 12:369 |
||||||||||||||||||||||||||
Volume Pagination | Rule: If there is more than one volume, pagination may continue on from volume one or may begin anew. If an index regarding both volumes will appear in the second volume, it’s best to continue pagination (Chicago, 1.105). | ||||||||||||||||||||||||||
Types of Books | Rule: Certain types of books use numbers in a specific manner. | ||||||||||||||||||||||||||
Bible | Rule: References to passages in the bible are always in arabic numerals. Use a colon to separate chapter and verse with no spaces between. | ||||||||||||||||||||||||||
Return to top or post contents |
Genesis 1:1 Exodus 20:3-17 Psalm 23:1 Proverbs 3:5 1Corinthians 13:13 |
||||||||||||||||||||||||||
Play or Poetry | Rule: Use arabic numerals when referring to divisions within a play or poem. Also see Capitalization for those rules about plays or poems. | ||||||||||||||||||||||||||
Return to top or post contents |
act 4, part 22, line 12 canto 2 stanza 5 |
||||||||||||||||||||||||||
Calendar | |||||||||||||||||||||||||||
Century |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Date | Definition: A date is the month and day OR the month, day, and year.
Rule: Uses either arabic numerals or they are spelled out. |
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
All-Numeral Dates |
Chicago, 9.39 |
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Day |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Placement | CAUTION: This particular usage depends upon your target reading audience and not the setting. You want your reader to subconsciously understand the date, not have to stop and work it out. | ||||||||||||||||||||||||||
Return to top or post contents |
[US] January 28, 1943 [British, Europe] 28 January 1943, a.k.a. little endian form [Europe] 1943 January 28, a.k.a. big endian form
[Hungary] 1943. január 28 |
||||||||||||||||||||||||||
Decade |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
First Two Decades of a Century |
Rule: The first two decades of any century are not treated in the same way as above (Chicago, 9.37):
|
||||||||||||||||||||||||||
Return to top or post contents |
Chicago suggests: the first decade of the twenty-first century, or the years 2000-2009 the second decade of the twenty-first century, or the years 2010-2019 |
||||||||||||||||||||||||||
Year | |||||||||||||||||||||||||||
2-Digit Year | Rule: If you abbreviate the year down to two digits, use an apostrophe to indicate the two missing numbers. | ||||||||||||||||||||||||||
Return to top or post contents |
'08 '15 the San Francisco Earthquake of '06 |
||||||||||||||||||||||||||
4-Digit Year | Rule: In general use arabic numerals; spell it out if the year starts a sentence. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
5-Digit ++ Year | Rule: For years with five or more digits, use a comma. Be sure to use A.D. before the year unless the year is spelled out,, and B.C. after the year. See more about using A.D. and B.C. at Abbreviations | ||||||||||||||||||||||||||
Return to top or post contents |
42,000 B.C. A.D. 907 2000 B.C. 25,495 B.C. A.D. tenth century 69 B.C. |
||||||||||||||||||||||||||
Range of Years | Rule: When indicating a range (use an en dash), you,may drop all but the last two digits providing the first two are the same (see also inclusive numbers): | ||||||||||||||||||||||||||
Return to top or post contents |
1639–1729 1639–47 1632–33 |
||||||||||||||||||||||||||
Comparing Numbers | |||||||||||||||||||||||||||
Numbers 9 and Under | Rule: Spell it out. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Numbers That Include 0-9 AND 10 and Up | Rule: Use arabic numerals if using both single-digit and multiple-digit numbers. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Not Being Compared | Rule: See General Rule on arabic numerals or spelling it out. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Distance |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Government & Organizations | Rule: When referring to governments, dynasties, congresses, other governing bodies, military units, places of worship, political and judicial divisions, etc. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Lodges, Unions | Rule: Local branches of labor unions and fraternal lodges use cardinal arabic numerals. | ||||||||||||||||||||||||||
Return to top or post contents |
US Rubber Local #22 IA Local 8 North Branch Masonic Temple 312 |
||||||||||||||||||||||||||
Illustration, Plate, Figure, Map, Math Equation |
Rule: Number using arabic numerals only if they are referred to in the text and they would not be easily identifiable any other way.
Illustrations and figures are numbered consecutively from the beginning OR use double numeration, i.e., chapter number and figure number AND be consecutive within each chapter (Skillin, 264). The benefit of beginning from xx.1 in each chapter is the easier renumbering if you end up adding another illustration or figure in chapter 3 when you’re already up to chapter 12 and there are fifteen of ’em between the chapters! And if a figure, illustration, or other images are added so late that it’s a nightmare to renumber everything, then resort to using letters. Ebook: If any illustrations (this includes plates, figures, maps, charts, etc.) are not the same in both the print AND the eBook, each category must be numbered separately in both versions. In an eBook, each should be hyperlinked. |
||||||||||||||||||||||||||
Return to top or post contents |
Figure 2 Fig. 15.3 Fig. 4 Figure 12.3 Ill. 10.8 Fig. 4A |
||||||||||||||||||||||||||
Caption | Rule: With a caption, the identifying number is sometimes ended with a period and a space before beginning the caption text. Sometimes even the word figure or plate is omitted using only the number and a period (Chicago, 12.34). | ||||||||||||||||||||||||||
Return to top or post contents |
Fig 12. Holly Nails Mexican Food, April 1996
Figure 3.1. Skating on the lagoon Plate 5. Cherry Blossom Festival in Tokyo 3.1. Skating on the lagoon |
||||||||||||||||||||||||||
Figures in Parts | Rule: If parts of a figure are referenced in the text, letters may be used. | ||||||||||||||||||||||||||
Return to top or post contents |
fig. 7B fig. 13D fig. 8a |
||||||||||||||||||||||||||
Gallery Illustrations | Rule: Illustrations grouped together in a block are not numbered unless they are referenced within the text, and then they are numbered separately from figures, plates, etc., within the text.
IF illustrations and plates are mixed in the gallery group, they must be sequenced separately. |
||||||||||||||||||||||||||
Return to top or post contents |
Fig. 2 (in the text, use fig. 2) Plate 2 (in the text, use plate 2) |
||||||||||||||||||||||||||
Inclusive Numbers | Definition: Includes the first and last number and all numbers in between. | ||||||||||||||||||||||||||
When to Use En Dash | Rule: Using an en dash between two numbers means that the reader should read it as from this first number up to and including or through this last number (Chicago, 9.62). | ||||||||||||||||||||||||||
Return to top or post contents |
The color photographs are on pages 145–167.
We’ll need to look at your tax returns for 1999–2004. You may not ride this ride if you are 0–12 years of age. |
||||||||||||||||||||||||||
Don’t Use En Dash | Rule: If using or implying from or between, do not use an en dash. Instead use a combination of either:
If you need to be precise, use one of the froms (Chicago, 9.63). |
||||||||||||||||||||||||||
Return to top or post contents |
I think she’s between 25 and 30.
It happened between 1996 and 1999. The Lotus went from 0 to 120mph in twenty seconds. The ice cream parlor was open from 10 a.m. through 10 p.m. |
||||||||||||||||||||||||||
Spelled-Out Numbers | Rule: If numbers are spelled out, do NOT use an en dash (Chicago, 9.63). | ||||||||||||||||||||||||||
Return to top or post contents |
You may not ride this ride if you are zero to twelve years of age. | ||||||||||||||||||||||||||
Abbreviate or Condense | Rule: Mostly used with page or serial numbers because they don’t use commas, this style emulates how someone would read the numbers aloud (Chicago, 9.64).
There are four different patterns in the style preferred by Chicago:
Other styles require including all the digits on either side of the through, and, or en dash. |
||||||||||||||||||||||||||
Return to top or post contents |
Read pages 10–69.
Read pages 1100–1117. Read pages 405–9. Read pages 378–99. Read pages 1001–1115. |
||||||||||||||||||||||||||
Use Every Single Digit if . . . | Rule: Vote tallies, sports scores, etc., are not indicative of a range, so you must use every digit (Chicago, 9.65). | ||||||||||||||||||||||||||
Return to top or post contents |
The vote tally was 24,301 to 23,999.
The score was 38 to 20. |
||||||||||||||||||||||||||
If Using Commas | Rule: Repeat numbers to the right of the comma as needed (Chicago, 9.66). | ||||||||||||||||||||||||||
Return to top or post contents |
3,000–3,099
15,743–749 5,863,479–480 |
||||||||||||||||||||||||||
Inclusive Years | Rule: Chicago uses an adaptation of the patterns in abbreviated or condensed with a few guidelines (Chicago, 9.67 and 9.64).
It essentially boils down to your using as many digits as are changed, although you should still use all four digits if three digits change. |
||||||||||||||||||||||||||
Return to top or post contents |
1762–1801
Judgment in Death takes place in the winter of 2058–9. Augustus, the Roman Empire’s first emperor, ruled from 27 BC–AD 14. The Cambrian period lasted from 541.0–485.4 million years ago. |
||||||||||||||||||||||||||
Inclusive Years in Titles | Rule: In book titles, the custom is to repeat all four digits (Chicago, 9.68). | ||||||||||||||||||||||||||
Return to top or post contents |
Eric J. Hobsbawm wrote The Age of Extremes: A History of the World 1914–1991.
Gordon S. Wood’s Empire of Liberty: A History of the Early Republic, 1789–1815 is fourth in the Oxford History of the United States series. |
||||||||||||||||||||||||||
Inclusive Years within Books | Rule: Inside a book, it is acceptable and appropriate to shorten the inclusive years per the above rules for (Chicago, 9.68):
|
||||||||||||||||||||||||||
Return to top or post contents |
In chapter 10, “From Coal to Diamonds, 1874–88
Fig. 15–30. Selected works by Rembrandt van Rijn, 1620–35. Table 7. Analysis of Books Read, 2004–11 |
||||||||||||||||||||||||||
Legal | Rule: Primarily use arabic numerals, although both arabic and roman numerals may be used to tell the difference between divisions. | ||||||||||||||||||||||||||
Return to top or post contents |
We’ll have to file for Chapter 11.
Have you invested in a 401(k) yet? You should check out paragraph 4(vii) in the bylaws. Article II, Section 4 OR Amendment 64 made the personal use of marijuana legal in Colorado November 6, 2012. The Fifth Amendment (or Amendment V) gives us the right to remain silent to protect ourselves from incrimination. |
||||||||||||||||||||||||||
List | Rule: There are two types of lists: a run-in and a vertical. A list that uses numbers or letters is referred to as an ordered list.
Chicago: Use arabic numerals for an ordered list. Also see Outline under “Roman Numeral”. |
||||||||||||||||||||||||||
Run-in List | Definition: A list that is part of a sentence.
Rule: Use enclosing parentheses around the numbers, no period, and a semicolon to separate the list items. |
||||||||||||||||||||||||||
Return to top or post contents |
The cover for a book has three parts: (1) the front; (2) the back; and, (3) the spine. | ||||||||||||||||||||||||||
Vertical List | Definition: List items are indented with each item on its own line; subdivided items are indented further to help distinguish them from the upper level. | ||||||||||||||||||||||||||
Return to top or post contents |
Rule: Chicago: The first level uses arabic numerals with the second level using lowercase alpha. Punctuation-wise, use a period and a space for the first three levels; use single or double parentheses for the next four levels. Text for a line item that overflows to a second line must line up with the first letter of the line item. A.k.a. display list, HTML & CSS refer to a subdivided list as nested |
||||||||||||||||||||||||||
1. Numerals a. Address b. Book i. Anatomy of a Book 1) Chapter (a) Section i) Subheading 2) Sub-subheading 2) Page 2. Time |
|||||||||||||||||||||||||||
List of Four or More Numbers | Rule: Always use arabic numerals. | ||||||||||||||||||||||||||
Return to top or post contents |
in row 6 1, 5, 7, and 9 words |
||||||||||||||||||||||||||
Math | |||||||||||||||||||||||||||
In General: Use arabic numerals when mathematical functions are involved. Also see Illustration for details on numbering mathematical equations in a book. | |||||||||||||||||||||||||||
Decimal | Rule: Include a 0 and a decimal point in front of numerals that are less than 1 to ensure the reader reads it properly.
When used in a table, the 0 in the 0.xx can be eliminated unless required by the publisher. |
||||||||||||||||||||||||||
Return to top or post contents |
12.09 0.0001 0.73 |
||||||||||||||||||||||||||
Decimals Omitting 0.xx | Rule: An exception to the 0 rule is when the quantity is always less than 1.00, as used in probabilities, correlation coefficients, etc., and the 0 is left off AND in baseball batting averages and firearm caliber (Chicago, 9.21). | ||||||||||||||||||||||||||
Return to top or post contents |
p<0.7 R=.15 .22 caliber He used a .357 Magnum. Ted Williams of the Boston Red Sox hit .406 in 1941. |
||||||||||||||||||||||||||
Fraction |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Rule: Do not use of a or of an after an arabic numeral. | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Whole Number with Fraction | Rule: If the combination is short, spell it out, but all numerals is usually better. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Measure-ment | Rule: Use arabic numerals immediately before a unit of measure and spell out feet, inches, yards, etc. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Abbreviations & Symbols with 2+ Quantities | Chicago uses the symbol or abbreviation:
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
As an Adjective | Rule: When numbers are used as a simple adjective, use arabic numerals and spell out the measurements. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Rule: When numbers and measurements are used as an adjective in front of a noun, use hyphens between the arabic numerals and the measurements. | |||||||||||||||||||||||||||
Legend:
Mandy is a 4-foot-7-inch waitress. They used 2-by-6 framing in their house. The bedroom is 14 feet by 16 feet with an 8-foot ceiling. |
|||||||||||||||||||||||||||
Money |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Rule: If one of the “dollar” amounts is only cents, be sure to include a 0 and a decimal point in front of the cents to ensure clarity. | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Rule: Do include .00 for even dollar amounts when dollar-only amounts are noted along with dollar + cent amounts for consistency and to ensure that no one thinks you’re embezzling(!) from your story. | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Rule: When including US dollars and currency from countries which also use a $ sign, the country must be identified. | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Rule: In an informal financial context, thousands are sometimes represented by K (Chicago, 9.28). | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Movie Title | Rule: When referring to a sequel to a movie, use Roman numerals (Chicago, 9.48). | ||||||||||||||||||||||||||
Return to top or post contents |
Rocky IV Mission Impossible V Shrek II |
||||||||||||||||||||||||||
Numbers that are Side-by-Side | Rule: When combining different number units in one sentence, alternate between arabic numerals and spelling it out (Burckmyer, 192). Chicago, 9.7, suggests using the same format for each category within a paragraph or series of paragraphs. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Percent | Definition: The rate, number, or amount in each hundred. | ||||||||||||||||||||||||||
Return to top or post contents |
Rule: Use arabic numerals with either % or percent.
BUT, if the numeral begins a sentence, then you have to write out the numeral or figure out another way to start the sentence. You may also want to explore formatting in “Percent” and/or the word confusion post “Percent vs Percentage vs Percentile“. |
||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Examples: | |||||||||||||||||||||||||||
Bread prices were up 10 percent last week.
Ten percent was the last rise in bread prices. Bread rose 10% last week, 5% the week before, and 2.5% the week before that. Interest rates jumped from 8 to 12 percent. |
|||||||||||||||||||||||||||
Rule: Always use a decimal, never a fraction. Be sure to include a 0 in front of a percentage that is less than 1.00, especially if other percentages are whole numbers. If the numbers are all less than 1.00, the 0 can be eliminated. | |||||||||||||||||||||||||||
3.25 percent, not 3¼ percent 0.25 percent, not ¼ percent |
|||||||||||||||||||||||||||
Rule: Depending upon the style guide in use, do OR don’t put a space between the number and the percent sign, %. Whichever you choose, be consistent. | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
Percentage | Definition: An absolute rate, number, or amount in each hundred.
You may also want to explore the word confusion post “Percent vs Percentage vs Percentile“. |
||||||||||||||||||||||||||
Return to top or post contents |
Rule: Numerals are not used with percentage. | ||||||||||||||||||||||||||
A surprisingly high percentage of college freshmen drop out.
Magic Johnson and Kareem Abdul-Jabbar had the highest goal percentages for the game, shooting 73 and 78 percent, respectively. The percentage of college freshman who drop out is higher than 25 percent. The hecklers constituted only a small percentage of the audience. There is no percentage in work without pay. |
|||||||||||||||||||||||||||
Rule: You can use a numeral with percentage points. | |||||||||||||||||||||||||||
Interest rates increased by 3 percentage points. | |||||||||||||||||||||||||||
Percentile | Definition: References statistics:
In General: Use arabic numerals. You may also want to explore the word confusion post “Percent vs Percentage vs Percentile“. |
||||||||||||||||||||||||||
Return to top or post contents |
Your baby is within the tenth percentile for weight for his age.
You had a percentile of 86 which means you scored better than 85% of those who took the test. |
||||||||||||||||||||||||||
Pluralizing Numbers | Rule: Style guides differ, so go with the style guide you are using. And be CONSISTENT. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Physical Quantity | Rule: Chicago uses a combination of arabic numerals and spelled-out numbers depending upon common usage and commonsense. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Points on a Scale | In General: Always use arabic numerals. | ||||||||||||||||||||||||||
Punctuation | Rule: Where and when to use a comma varies depending upon regular use or scientific use, American and British common style versus Canadian versus the International System of Units (more common amongst science, medicine, government, and various fields of technology and engineering fields), type of usage, and more: | ||||||||||||||||||||||||||
America vs International System of Units | Rule: In general, numbers are separated into three-digit units using decimal points and commas. How they’re separated is different among American, Canadian, European, and the International System of Units (SI).
Common use in America and Great Britain is a:
Common use in Canada is a:
Common use in Europe is a
SI is metric and uses a:
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Possessive Numerals | Definition: Relating to a word or a form of a word that shows that something or someone belongs to something or someone else.
Rule: Ownership or possession is usually shown by the use of an apostrophe s (‘s). CAUTION: Do not confuse a plural number with a possessive number. |
||||||||||||||||||||||||||
Return to top or post contents |
Hurricane Katrina was 2005’s eleventh named storm and its fifth hurricane. | ||||||||||||||||||||||||||
Quartile | Definition: A type of quantile, it references descriptive statistics in which the quartiles of a ranked set of data values are the three points that divide the data set into four equal groups, each group comprising a quarter of the data.
When such statistics are applied in the fields of epidemiology, sociology, and finance, the quartiles of a ranked set of data values are the four subsets whose boundaries are the three quartile points. In General: Use arabic numerals. |
||||||||||||||||||||||||||
Return to top or post contents |
This response is in the upper quartile. | ||||||||||||||||||||||||||
Ratio | In General: Always use arabic numerals and either a colon to express the relative sizes of two or more values — there is no space before or after the colon — or a to with space between the to and the numbers. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Roman Numeral | In General: Roman numerals use upper- and lowercase letters: I, V, X, L, C, D, and M. In arabic numerals, this would correspond to 1, 5, 10, 50, 100, 500, and 1,000. | ||||||||||||||||||||||||||
Return to top or post contents |
Repeating a letter repeats its value: X = 10, XX = 20
Place a smaller-value letter in front of a higher-value letter, and it reduces the value of the higher-value: XL = 90, or 10 – 100. Place a higher-value letter in front of a lower-value letter, and it increases the value of the combined letters: LX = 110, or 100 + 10. A line (macron) placed over a letter adds three 0s to it: V̄ = 5,000; C̄ = 100,000; M̄ = 1,000,000 |
||||||||||||||||||||||||||
Musical Chords | Rule: Use uppercase Roman numerals to identify major triads in the root position of musical chords (Roman). | ||||||||||||||||||||||||||
Return to top or post contents |
|||||||||||||||||||||||||||
Rule: Use lowercase Roman numerals to identify minor triads in the root position of musical chords (Roman). | |||||||||||||||||||||||||||
Outlines | Rule: Chicago: Use uppercase and lowercase Roman numerals as part of an outline. This also applies to lists. | ||||||||||||||||||||||||||
Return to top or post contents |
I. Numerals A. Address B. Book 1. Anatomy of a Book a) Chapter (1) Section (a) Subheading i) Sub-subheading b) Page II. Time |
||||||||||||||||||||||||||
Proper Names & Rulers | Rule: Use uppercase Roman numerals to separate monarchs, popes, and family members with identical names. Do not use commas to separate the name and the Roman numeral. | ||||||||||||||||||||||||||
Return to top or post contents |
Louis XIV Pope John Paul II Richard Wilmington Brown IV |
||||||||||||||||||||||||||
Front Matter for a Book | See Front Matter under “Book”. | ||||||||||||||||||||||||||
Rounded or Approximate Numbers | |||||||||||||||||||||||||||
Under a Million | Rule: Use the forms noted below when writing rounded or approximate numbers of thousands.
Burckmyer, 125–126 |
||||||||||||||||||||||||||
Return to top or post contents |
a thousand
one thousand seven thousand fifteen hundred seventy-five hundred |
Rule: In general, spell out rounded or approximate numbers. | |||||||||||||||||||||||||
There were 1,240 people in the town.
There were about twelve hundred people in the town. I believe there are about 30 thousand students enrolled. It looked as if about two hundred or so infantry units were on the beach. |
|||||||||||||||||||||||||||
Rule: If the sentence or paragraph contains specific numbers and rounded numbers, use arabic figures. | |||||||||||||||||||||||||||
There were only 1,240 people in the town in 1950, but the population was expected to increase to about 9,000 by 1970.
Last year we had 125 registered in the course, but next year there should be about 200. |
|||||||||||||||||||||||||||
Rule: If there is any chance for confusion, use numerals — even for the rounded numbers. | |||||||||||||||||||||||||||
Vague: He said he could defend against two or three hundred.
Better: He said he could defend against 200 or 300. |
|||||||||||||||||||||||||||
Rule: Spell out numbers that appear rarely in a manuscript, and do NOT use and after the hundred or thousand. | |||||||||||||||||||||||||||
two hundred fifty-six
seven hundred forty six thousand nineteen forty-six thousand two hundred seventy-two |
|||||||||||||||||||||||||||
Rule: Spell rounded, isolated numbers over one hundred thousand, but use arabic figures for uneven thousands. | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
A Million or More | Rule: For numbers a million or greater, it is written as both an arabic numeral and a word (Burckmyer, 9.10). | ||||||||||||||||||||||||||
Return to top or post contents |
It’s estimated that people have been on earth for 5 million years or more.
Geological data on the Arctic Ocean indicate 400 billion barrels of oil. Legend:
|
||||||||||||||||||||||||||
Billion | Traditional Definition: [US] thousand million [British] million million A.k.a. trillion Chicago, 9.10 |
||||||||||||||||||||||||||
Return to top or post contents |
1,000,000,000 15,000,000,000, etc. |
||||||||||||||||||||||||||
Sample, Subsample, Population Size | In General: Always use arabic numerals. | ||||||||||||||||||||||||||
Scoring & Votes | In General: Use an en dash between the arabic numerals with no spaces. Never spell out the numbers; always use arabic numerals. The winning score is always listed first. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Specific Place in a Numbered Series | In General: Always use arabic numerals. | ||||||||||||||||||||||||||
Specific Numbers of Subjects / Participants in an Experiment | In General: Always use arabic numerals. | ||||||||||||||||||||||||||
Superscript & Subscript | Definition: Superscript and subscript are smaller numbers that are set higher or lower to the baseline and in a smaller font than is used in the text.
You may want to explore “Subscripts and Superscripts” on formatting for websites or eBooks. |
||||||||||||||||||||||||||
Superscript | Rule: A superscript is a number, arabic numeral, symbol, or indicator that is placed high to the baseline with a smaller font-size and are used for chemical symbols, mathematics, footnotes, intellectual property symbols, etc.
Note the ending punctuation placement which is back to the original, baseline. |
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Subscript | Rule: A subscript is a number, arabic numeral, symbol, or indicator that is placed at or below the baseline with a smaller font-size and are used for chemical symbols, mathematics, computing, etc.
Note the ending punctuation placement. |
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Table Number | Definition: Refers to the practice of numbering tables in a book.
Rule: Always use arabic numerals for a table number; do label the tables in your book consecutively from the beginning OR use double numeration, i.e., chapter number and table number AND be consecutive within each chapter. The benefit of beginning from xx.1 in each chapter is the easier renumbering if you end up adding another table in chapter 3 when you’re already up to chapter 12 and there are fifteen tables between the chapters! Typographically, the table number can be the same size as the table title and the table body. Or larger. It can be in a different font style from the table title. |
||||||||||||||||||||||||||
Return to top or post contents |
Table 1. Lexical Verb Forms
Table 1.14 |
||||||||||||||||||||||||||
Column Number | Rule: If a column number is referenced within the text, it must be numbered with arabic numerals in parentheses and centered immediately below the column head. | ||||||||||||||||||||||||||
Return to top or post contents |
|||||||||||||||||||||||||||
Telephone Number | |||||||||||||||||||||||||||
North American | Rule: North American telephone numbers follow a three-three-four format, i.e., 555-123-4567, with the first three numbers representing the area code. | ||||||||||||||||||||||||||
Return to top or post contents |
(555) 123-4567 555.123.4567 |
||||||||||||||||||||||||||
International | Rule: International telephone numbers should include the country code using the plus format. | ||||||||||||||||||||||||||
Return to top or post contents |
+1 (555) 123-4567 +44 12345 678 912 |
||||||||||||||||||||||||||
Time |
|
||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Rule: Spell the time out using a space between hour and minutes instead of a hyphen. | |||||||||||||||||||||||||||
four fifteen | |||||||||||||||||||||||||||
Rule: If used as an adjective in front of a noun, spell it out. | |||||||||||||||||||||||||||
a four-fifteen bus I want to catch the three-forty movie. |
|||||||||||||||||||||||||||
Rule: Using o’clock requires that time be spelled out. | |||||||||||||||||||||||||||
seven o’clock ten o’clock |
|||||||||||||||||||||||||||
Rule: Always spell out noon and midnight UNLESS using military time. | |||||||||||||||||||||||||||
Meet me there at noon.
Ooh, it’s almost midnight, the witching hour. |
|||||||||||||||||||||||||||
Ante Meridiem,
Post Meridiem |
Definition: Ante meridiem stands for a.m. while post meridiem stands for p.m..
Rule: As for the am and pm, the US prefers a lowercase a.m. / p.m., the British prefer an uppercase A.M. / P.M., and Europe and the military, prefer to use military time. CAUTION: Never use a.m. or p.m. with morning, afternoon, evening, night, or o’clock. |
||||||||||||||||||||||||||
Return to top or post contents |
4:01 a.m. 12:38 p.m. 9 p.m. [US; Chicago] 4:15 a.m. [Chicago] 4:15 AM (no periods) [Britain] 4:15 A.M. [Europe; military, a.k.a. 24-hour system] 1640 or 16:40 [Chicago: Military] 1640 (no colon) We will attack at 1433 h. We will attack at 1433 hours. |
||||||||||||||||||||||||||
Detailed Military Time | Rule: To include minutes and seconds, use either a colon or a period. If a date is used, use ISO format (Chicago, 9.45). | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Time Zone | Rule: In general, when writing, place the acronym for the relevant time zone in parentheses (Chicago, 15.44; Time). If speaking, spell it out (Time). | ||||||||||||||||||||||||||
Return to top or post contents |
The class will begin at 3 p.m. (MST).
Our surfing class begins at 5 a.m. (PDT) on the dot. The bombing run ended at 3:45 p.m. (GMT). The newscaster said the hurricane was set to hit at 8:15 a.m. Eastern Standard Time. |
||||||||||||||||||||||||||
UTC | Definition: UTC stands for Coordinated Universal Time and begins at Greenwich (GMT) which is UTC+0 (Time). UT stands for Universal Time. | ||||||||||||||||||||||||||
Return to top or post contents |
Rule: Time zones are noted with a – or + to indicate how many hours behind or ahead of Greenwich Mean Time that zone is (Greenwich).
CAUTION: There are exceptions, which are noted on Greenwich Mean Time.com. |
||||||||||||||||||||||||||
Pacific Standard Time (PST) is eight hours behind, which can be abbreviated as UTC-8.
We should arrive in Australia at 10 a.m. (GMT+8), or eight hours ahead of Greenwich Mean Time. Don’t forget that South Africa is GMT+2 while Chicago is GMT-5, which means I’ll be seven hours later than you. So don’t call after 5 p.m. Central Standard Time. |
|||||||||||||||||||||||||||
Military Time Zone | Definition: Military time zones are used worldwide for both military and civilian purposes. They represent each of the twenty four time zones in use around the world, including Coordinated Universal Time (UTC) which is represented by the Zulu Time Zone, a.k.a. UTC+0, Greenwich Mean Time. | ||||||||||||||||||||||||||
Return to top or post contents |
These codes are currently used by most military organizations, the International Civil Aviation Organization (ICAO), International Telecommunication Union (ITU), International Maritime Organization (IMO), and the Federal Aviation Administration (FAA) with some slight variations (Military).
Rule: Military time zones use the alphabet:
|
||||||||||||||||||||||||||
UTC-3: P is the military time zone for Brasilia, Brazil; Buenos Aires, Argentina; and, Georgetown, Guyana. | |||||||||||||||||||||||||||
Speaking Military Time | Rule: Movie characters say “oh six hundred” while military personnel say “zero six hundred”. Always use “hundred” and never “thousand”. Minutes use the same general rule as numbers: fifteen, forty-seven, etc. | ||||||||||||||||||||||||||
Return to top or post contents |
|
||||||||||||||||||||||||||
Transport | |||||||||||||||||||||||||||
Boat | Rule: Boats and such use a Roman numeral. | ||||||||||||||||||||||||||
Return to top or post contents |
Daisy III Tredding Water II HMS Carrick II |
||||||||||||||||||||||||||
Spacecraft | Rule: Uses arabic numerals. | ||||||||||||||||||||||||||
Mariner 9 Vostok 1 Saturn V Explorer 18 |
C’mon, get it out of your system, bitch, whine, moan . . . which words are your pet peeves? Also, please note that I try to be as accurate as I can, but mistakes happen or I miss something. Email me if you find errors, so I can fix them . . . and we’ll all benefit!
Satisfy your curiosity about other Formatting Tips by exploring its homepage or more generally explore the index of self-editing posts. You may also want to explore Book Layout & Formatting Ideas, Formatting Tips, Grammar Explanations, Linguistics, Publishing Tips, the Properly Punctuated, Word Confusions, Writing Ideas and Resources, and Working Your Website.
Resources for Numerals
Burckmyer, Becky. Awesome Grammar. Franklin Lakes, NJ: Career Press, 2008. Print.
“Cardinal Number.” Merriam-Webster. n.d. Web. n.d. <https://www.merriam-webster.com/dictionary/cardinal%20number>
Chicago Manual of Style. Chicago: University of Chicago Press, 2003. Print.
“GMT/UTC Time Differences or Offsets.” List of Time Zone Names and Abbreviations. Time Zone Designations. Greenwich Mean Time.com. n.d. Web. n.d. <https://greenwichmeantime.com/time-zone/abbreviations/>.
International Organization for Standardization. <https://www.iso.org/home.html>. (An international standard-setting body composed of representatives from various national standards organizations.)
“Military Time Zone Codes and Abbreviations.” TimeTemperature.com. n.d. Web. n.d. <http://www.timetemperature.com/abbreviations/military-time-zone-codes.shtml>.
“Roman Numeral Analysis.” Alcorn State University. n.d. Web. n.d. <http://musictheory.alcorn.edu/Version2/theory1/Roman.htm>.
Skillin, Marjorie E., Robert M. Gay, and other authorities. Words into Type. New Jersey: Prentice-Hall, Inc. 1974. Third edition. Print.
“Time Zone Abbreviations.” TimeTemperature.com. n.d. Web. n.d. <http://www.timetemperature.com/abbreviations/world_time_zone_abbreviations.shtml>.
“Using Numbers, Writing Lists.” Capital Community College Foundation. n.d. Web. n.d. <http://grammar.ccc.commnet.edu/grammar/numbers.htm>.
Pinterest Photo Credits
I can’t find my source for this image. If anyone knows who I can credit, let me know!