Numbers
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LESSON
Writers usually write out numbers they can write in a word or two and use Arabic numeralsArabic numerals are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. (0, 1, 2, 3...) to express larger numbers. However, most writers also follow a set of general guidelines about which numbers should be written out and which should be expressed in numerals. In this lesson, you will learn when to use words and when to use numerals to express various numbers.
Words
Numbers should be written out in these situations:
1. Numbers expressed in two words or less. Write out and hyphenate any number between twenty-one and ninety-nine. Numbers outside this range do not require a hyphen.
Eleven students
One hundred books
Seventy-nine animals
Thirty-four days
Fifty-five miles per hour
2. Large rounded numbersNumbers that have been increased or decreased to the nearest whole number. Examples: 1,050,129.88 is rounded down to 1,050,000.00.Numbers that have been increased or decreased to the nearest whole number. Examples: 1,050,129.88 is rounded down to 1,050,000.00 or estimated numbersNumbers that are not exact, but instead formed from an educated guess, usually a rounded number. Examples: about fifty million..
Five trillion
Five thousand
Seven hundred
3. Numbers at the beginning of a sentenceA group of words, phrases, or clauses that expresses a complete thought. A complete sentence has these characteristics: a capitalized first word, a subject and a predicate, and end punctuation, such as a period (.), question mark (?), or exclamation mark (!).. If the number is so large that it would be awkward to write out, rephrase the sentence so that the number is not the first word.
Four hundred and two staff members are in that unit. This could be rephrased to avoid the number at the beginning of the sentence: There are 402 staff members in that unit.
Twenty-five trucks arrived with supplies.
4. Numbers in dialogueSpoken conversation described in written form, such as the script for a movie..
"Sabrina swam five hundred and seven laps," he marveled.
"I put two hundred and twenty pieces of candy in the jar," she announced.
"How long will it take you to run a hundred and thirty-five miles?" he asked.
5. CenturiesA period of one hundred years. Example: the twentieth century includes the years from 1901 to 2000. and decadesA period of ten years. Example: the decade of the nineteen-nineties includes the years from 1990 to 1999.. These should be lowercase unless referring to a traditional period name.
The nineteenth century
The eighties
The Roaring Twenties
6. OrdinalA number that shows order. Examples: first, third, fifteenth. numbers, such as first, second, and third
Her first birthday
My second cupcake
His fifth time around the track
7. Simple fractions
One fourth of an ounce
One half of a cake
Two thirds of the pie
8. Time of day with "o'clock" and on the half and quarter hour.
Five o'clock
Half past two
A quarter past ten
Numerals
Arabic numerals are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The following types of numbers are usually expressed as Arabic numerals:
1. DecimalsA number that is written with a dot between the whole number and the part of the number that is less than one. Examples: 3.75 grade point average; 8.5 ounces.
7.5 ounces
2.5 grams
3.13 pounds
2. Specific time of day. Use noon or midnight instead of 12.
3:35 p.m.
4:47 a.m.
12:25 p.m.
3. Dates and years
July 22, 1954
April 3, 1966
September 9, 2011
4. Scores
The final score was 28 to 14.
She won the game 8 – 6.
He never recovered from the 15 – 14 loss.
5. Money references
He owed her $216.30.
She gave him $14.65.
Her change was $4.23.
6. Mixed numbers
Mix in 3 ½ cups of flour.
Her waist was 25 ¼ inches around.
Give him 2 ¼ tablespoons of the medicine after every meal.
Other Rules
There are a couple of other rules to keep in mind when you use numbers in your writing:
1. Be consistent.
It is important to treat related numbers in a sentence consistently. If you choose to use Arabic numerals, then use them throughout that sentence. The same is true if you choose to write out numbers. You can bend the guidelines for using numbers if you have a purpose and are consistent.
Incorrect: Each of the 12 children sorted out seventy-five cans of food for donation.
Correct: Each of the twelve children sorted out seventy-five cans of food for donation.
Also correct: Each of the 12 children sorted out 75 cans of food for donation.
2. When in doubt, check your style guideA set of rules for punctuation, grammar, and other facets of writing, used to produce consistency and promote understanding. Different publications and types of writing often follow different style guides. Well-known style guides in the U.S. include The Chicago Manual of Style, the MLA Style Manual, and the Associated Press Stylebook.. While the general rules above will suit most situations, there is some variation between MLAA grammar and reference guide used mainly by students and scholars writing about the humanities (languages and literature). , APAA set of guidelines for citing sources used in literary and academic writing. APA style is most commonly used in the social sciences., APA punctuation and grammar guide used mainly in journalism, public relations, and advertising., and The Chicago Manual of StyleA set of guidelines for grammar, punctuation, and citations, widely used by students, editors, and general interest publications..
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