ordinal numbers 1 100
Ordinal Numbers 1–100
Answer:
Below you’ll find a comprehensive guide to the first 100 ordinal numbers in English. Ordinal numbers are essential for indicating position, order, or sequence (for example, “1st place,” “2nd floor,” “3rd chapter”) rather than quantity, which is the purpose of cardinal numbers (“one,” “two,” “three,” etc.). Read on to learn about their usage, spelling patterns, and see an extensive list of ordinals from 1 to 100.
Table of Contents
- Overview of Ordinal Numbers
- Definition of Cardinal vs. Ordinal Numbers
- Spelling & Usage Rules
- List of Ordinal Numbers (1–100)
- Common Uses of Ordinal Numbers
- Summary Table
- Key Takeaways
1. Overview of Ordinal Numbers
Ordinal numbers show the exact position of something or someone within a sequence. They tell us if someone or something is in first place, second place, and so on. In English, we add a suffix (“-th,” “-st,” “-nd,” or “-rd”) to the cardinal number to create the ordinal form. For instance, “1” becomes “1st,” “2” becomes “2nd,” “3” becomes “3rd,” and “4” becomes “4th.”
2. Definition of Cardinal vs. Ordinal Numbers
• Cardinal numbers (one, two, three) express quantity. They tell how many of something there are.
• Ordinal numbers (first, second, third) express a specific position or rank in a sequential order.
In short:
- “I have two dogs.” (cardinal)
- “This is my second dog.” (ordinal)
3. Spelling & Usage Rules
- -st Suffix (First): Use -st for numbers ending in 1 (except when the tens digit is 1, which is then -th). For example, 1st, 21st, 31st, 41st, etc.
- -nd Suffix (Second): Use -nd for numbers ending in 2 (except when the tens digit is 1, which is then -th). Example: 2nd, 22nd, 32nd, 42nd, etc.
- -rd Suffix (Third): Use -rd for numbers ending in 3 (except when the tens digit is 1, which is then -th). Example: 3rd, 23rd, 33rd, 43rd, etc.
- -th Suffix (Fourth): Use -th for numbers ending in 0, 4, 5, 6, 7, 8, 9, or any number ending in teens (e.g., 11th, 12th, 13th). Examples: 4th, 5th, 11th, 12th, 20th, 111th, etc.
- Spelling Out vs. Numerals: When writing formal or literary texts, you might spell out the entire word: “forty-second,” “ninety-ninth,” etc. In more casual writing or numeric lists, using numerals with suffixes (42nd, 99th) is perfectly acceptable.
4. List of Ordinal Numbers (1–100)
Below is a detailed list of ordinals from 1st through 100th. Notice the suffix changes and the spelling considerations:
- 1st (first)
- 2nd (second)
- 3rd (third)
- 4th (fourth)
- 5th (fifth)
- 6th (sixth)
- 7th (seventh)
- 8th (eighth)
- 9th (ninth)
- 10th (tenth)
- 11th (eleventh)
- 12th (twelfth)
- 13th (thirteenth)
- 14th (fourteenth)
- 15th (fifteenth)
- 16th (sixteenth)
- 17th (seventeenth)
- 18th (eighteenth)
- 19th (nineteenth)
- 20th (twentieth)
- 21st (twenty-first)
- 22nd (twenty-second)
- 23rd (twenty-third)
- 24th (twenty-fourth)
- 25th (twenty-fifth)
- 26th (twenty-sixth)
- 27th (twenty-seventh)
- 28th (twenty-eighth)
- 29th (twenty-ninth)
- 30th (thirtieth)
- 31st (thirty-first)
- 32nd (thirty-second)
- 33rd (thirty-third)
- 34th (thirty-fourth)
- 35th (thirty-fifth)
- 36th (thirty-sixth)
- 37th (thirty-seventh)
- 38th (thirty-eighth)
- 39th (thirty-ninth)
- 40th (fortieth)
- 41st (forty-first)
- 42nd (forty-second)
- 43rd (forty-third)
- 44th (forty-fourth)
- 45th (forty-fifth)
- 46th (forty-sixth)
- 47th (forty-seventh)
- 48th (forty-eighth)
- 49th (forty-ninth)
- 50th (fiftieth)
- 51st (fifty-first)
- 52nd (fifty-second)
- 53rd (fifty-third)
- 54th (fifty-fourth)
- 55th (fifty-fifth)
- 56th (fifty-sixth)
- 57th (fifty-seventh)
- 58th (fifty-eighth)
- 59th (fifty-ninth)
- 60th (sixtieth)
- 61st (sixty-first)
- 62nd (sixty-second)
- 63rd (sixty-third)
- 64th (sixty-fourth)
- 65th (sixty-fifth)
- 66th (sixty-sixth)
- 67th (sixty-seventh)
- 68th (sixty-eighth)
- 69th (sixty-ninth)
- 70th (seventieth)
- 71st (seventy-first)
- 72nd (seventy-second)
- 73rd (seventy-third)
- 74th (seventy-fourth)
- 75th (seventy-fifth)
- 76th (seventy-sixth)
- 77th (seventy-seventh)
- 78th (seventy-eighth)
- 79th (seventy-ninth)
- 80th (eightieth)
- 81st (eighty-first)
- 82nd (eighty-second)
- 83rd (eighty-third)
- 84th (eighty-fourth)
- 85th (eighty-fifth)
- 86th (eighty-sixth)
- 87th (eighty-seventh)
- 88th (eighty-eighth)
- 89th (eighty-ninth)
- 90th (ninetieth)
- 91st (ninety-first)
- 92nd (ninety-second)
- 93rd (ninety-third)
- 94th (ninety-fourth)
- 95th (ninety-fifth)
- 96th (ninety-sixth)
- 97th (ninety-seventh)
- 98th (ninety-eighth)
- 99th (ninety-ninth)
- 100th (one hundredth)
5. Common Uses of Ordinal Numbers
- Dates: E.g., “Today is my birthday, March 21st.”
- Rankings: E.g., “She finished 2nd in the race.”
- Order in a Sequence: E.g., “The 7th chapter is the longest.”
- Floors in a Building: E.g., “He lives on the 10th floor.”
- Centuries: E.g., “The 21st century started in the year 2001.”
6. Summary Table
| Ordinal | Spelling | Short Form | Notes |
|---|---|---|---|
| 1 | first | 1st | Special suffix for numbers ending in 1 |
| 2 | second | 2nd | Special suffix for numbers ending in 2 |
| 3 | third | 3rd | Special suffix for numbers ending in 3 |
| 11 | eleventh | 11th | Teens always use -th |
| 20 | twentieth | 20th | -th suffix used for most endings |
| 21 | twenty-first | 21st | Keep the hyphen when spelled out |
| 22 | twenty-second | 22nd | Keep the hyphen when spelled out |
| 23 | twenty-third | 23rd | Keep the hyphen when spelled out |
| … | … | … | Spelling follows the general pattern |
| 100 | one hundredth | 100th | The -th suffix is used here |
7. Key Takeaways
• Ordinal numbers indicate position or order, whereas cardinal numbers show quantity.
• Use -st, -nd, -rd, or -th depending on the last digit of the number and any exceptions regarding teens (11th, 12th, 13th).
• Ordinals are especially common in dates, ranks, and sequences.
• Always pay attention to spelling and punctuation (e.g., “thirty-third,” “seventy-ninth”).
By familiarizing yourself with the spelling and suffix rules, you’ll have no problem navigating ordinal numbers from 1st to 100th in English—whether you’re writing dates, floors, or instructions in a sequence!