Ordinal numbers are the numbers that talk about the position of objects. For example, “The cookies are kept in the 3rd drawer from the top”, “The orange dress is the 7th one from the right”, “The soccer ball is kept in the 3rd carton from the left”. All these sentences have one thing in common – they talk about the positions of the objects. This is the main element in the discussion of ordinal numbers.
1. What are Ordinal Numbers? 2. Difference Between Cardinal and Ordinal Numbers 3. List of Ordinal Numbers from 1 to 100 4. FAQs on Ordinal Numbers
An ordinal number is a number that indicates the position or order of something in relation to other numbers, like, first, second, third, and so on. This order or sequence may be according to the size, importance, or any chronology. Let us understand the ordinal numbers with an example. Ten students participated in a contest. Out of them, the top winners were given medals and were ranked as 1st, 2nd, and 3rd. In this case, the positions: 1st, 2nd, and 3rd are ordinal numbers.
A cardinal number is a number that denotes the count of any object. Any natural number such as 1, 2, 3, etc., is referred to as a cardinal number, whereas, an ordinal number is a number that denotes the position or place of an object. For example, 1st, 2nd, 3rd, 4th, 5th, etc. Now, if we say, “There are 3 ants and 5 bears”. This is an example of cardinal numbers. However, if we say, “The position of the runners in the running event is first, second, third, and so on”, this represents ordinal numbers. Observe the table given below to note the difference between cardinal numbers and ordinal numbers.
The list of ordinal numbers from 1 to 100 can be learned easily and is quite helpful for specifying the order of any given object. You can use the combinations from this list to find out the ordinal numbers from 100 onward. Have a look at the table given below in order to understand how ordinal numbers are written. You might be able to pick up a pattern after referring to the first twenty ordinal numbers.
1st: First 21st: Twenty-First 41st: Forty-First 61th: Sixty-First 81st: Eighty-First 2nd: Second 22nd: Twenty-Second 42nd: Forty-Second 62nd: Sixty-Second 82nd: Eighty-Second 3rd: Third 23rd: Twenty-Third 43rd: Forty-Third 63rd: Sixty-Third 83rd: Eighty-Third 4th: Fourth 24th: Twenty-Fourth 44th: Forty-Fourth 64th: Sixty-Fourth 84th: Eighty-Fourth 5th: Fifth 25th: Twenty-Fifth 45th: Forty-Fifth 65th: Sixty-Fifth 85th: Eighty-Fifth 6th: Sixth 26th: Twenty-Sixth 46th: Forty-Sixth 66th: Sixty-Sixth 86th: Eighty-Sixth 7th: Seventh 27th: Twenty-Seventh 47th: Forty-Seventh 67th: Sixty-Seventh 87th: Eighty-Seventh 8th: Eighth 28th: Twenty-Eighth 48th: Forty-Eighth 68th: Sixty-Eighth 88th: Eighty-Eighth 9th: Ninth 29th: Twenty-Ninth 49th: Forty-Ninth 69th: Sixty-Ninth 89th: Eighty-Ninth 10th: Tenth 30th: Thirtieth 50th: Fiftieth 70th: Seventieth 90th: Ninetieth 11th: Eleventh 31st: Thirty-First 51st: Fifty-First 71st: Seventy-First 91st: Ninety-First 12th: Twelfth 32nd: Thirty-Second 52nd: Fifty-Second 72nd: Seventy-Second 92nd: Ninety-Second 13th: Thirteenth 33rd: Thirty-Third 53rd: Fifty-Third 73rd: Seventy-Third 93rd: Ninety-Third 14th: Fourteenth 34th: Thirty-Fourth 54th: Fifty-Fourth 74th: Seventy-Fourth 94th: Ninety-Fourth 15th: Fifteenth 35th: Thirty-Fifth 55th: Fifty-Fifth 75th: Seventy-Fifth 95th: Ninety-Fifth 16th: Sixteenth 36th: Thirty-Sixth 56th: Fifty-Sixth 76th: Seventy-Sixth 96th: Ninety-Sixth 17th: Seventeenth 37th: Thirty-Seventh 57th: Fifty-Seventh 77th: Seventy-Seventh 97th: Ninety-Seventh 18th: Eighteenth 38th: Thirty-Eighth 58th: Fifty-Eighth 78th: Seventy-Eighth 98th: Ninety-Eighth 19th: Nineteenth 39th: Thirty-Ninth 59th: Fifty-Ninth 79th: Seventy-Ninth 99th: Ninety-Ninth 20th: Twentieth 40th: Fortieth 60th: Sixtieth 80th: Eightieth 100th: Hundredth
Topics Related to Ordinal Numbers
Check these articles related to ordinal numbers in math.
- Cardinal Numbers
- Ordinal Numbers Worksheets for Kindergarten
- Numbers