Punctuation for the number "3" depends on context: write it as the word "three" in general text for small numbers (0-10), use the numeral "3" for counts, use "3s" for plurals (like "the 3s"), and format it as 3. with a period at the end of a sentence, or 3:00 PM/3 p.m. for time, following specific style guide rules for spacing and case.
When a list within a sentence contains three or more items, use a serial comma before the final item. We gathered information about participants' age, gender, and socioeconomic status. However, if any item in a list of three or more items already contains commas, use semicolons instead of commas between the items.
A simple rule for using numbers in writing is that small numbers ranging from one to ten (or one to nine, depending on the style guide) should generally be spelled out. Larger numbers (i.e., above ten) are written as numerals.
Use numerals instead of words for numbers, except at the beginning of a sentence. Use commas to separate thousands in numbers 1,000 and above. For approximate numbers over 999,999, spell out millions or billions. Use 'to' for a span of numbers.
Numbers up to nine should always be written in words, anything higher than nine can be written in numerals. Alternatively, some guides suggest that if you can write the number in two words or fewer then use words rather than numerals.
In both varieties of English, ordinal numbers may also be used to indicate the day (e.g. 1st January 2025 or January 1st, 2025); however, the UOC prefers that cardinal numbers be used instead.
Rule To Remember
Spell out numbers at the beginning of the sentence, with the exception of years. Numbers that represent years, days of month, pages, chapters, street addresses, route numbers, percentages, temperatures, and telephone numbers should be written as numerals.
The number 3 in words is “three”. It signifies a count that is one more than two.
John Smith III or John Smith, III? A. Traditionally, it would be John Smith, Jr., and John Smith III. But beginning with the fourteenth edition of The Chicago Manual of Style (1993), the recommendation is to use no commas in either case (see paragraph 6.43 of the seventeenth edition):
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Write down a three-digit number whose digits are decreasing. Then reverse the digits to create a new number, and subtract this number from the original number. With the resulting number, add it to the reverse of itself. The number you will get is 1089!
The Associated Press Stylebook recommends spelling out numbers up to and including nine. That's zero, one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15 etc. For business writing, in some cases I think it's OK to use a number in something informal, however.
The ordinal numbers from 1 to 10 are 1st – First, 2nd – Second, 3rd – Third, 4th – Fourth, 5th – Fifth, 6th – Sixth, 7th – Seventh, 8th – Eighth, 9th – Ninth and 10th – Tenth, respectively.
In written material numbers are supposed to be written out, unless they are very large. You would write 'twenty-one, but you would use numerals for the world's population 7,600,000 (or something around that), or you could write 7.6 billion.
Therefore, 93 in words is written as Ninety-three.
Therefore, 3 in words is written as Three.
Generally, in the US, we write June 2. June 2nd would be acceptable but a bit formal. June second or June the second would be even more formal.
For American audiences, when writing out a date within a sentence, place a comma after the day, the month, AND the year, as in these three examples: Plaintiff Strawberry Fields & Co. requested summary judgment on Tuesday, January 3, 2023, the same day that defendant Octopus Gardens, Inc.
For dates, use 1, 2, 3, 4, not 1st, 2nd, 3rd, 4th.