Ordinal Numbers
Ordinal numbers are the numbers that talk about the position of objects. For example, 'The cookies are kept in the 3^{rd} drawer from the top', 'The orange dress is the 7^{th} one from the right', 'The soccer ball is kept in the 3^{rd} 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 
What are 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 1^{st}, 2^{nd}, and 3^{rd}. In this case, the positions: 1^{st}, 2^{nd}, and 3^{rd} are ordinal numbers.
Difference Between Cardinal and 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, 1^{st}, 2^{nd}, 3^{rd}, 4^{th}, 5^{th}, 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.
List of Ordinal Numbers from 1 to 100
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. Observe 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: TwentyFirst  41st: FortyFirst  61th: SixtyFirst  81st: EightyFirst 
2nd: Second  22nd: TwentySecond  42nd: FortySecond  62nd: SixtySecond  82nd: EightySecond 
3rd: Third  23rd: TwentyThird  43rd: FortyThird  63rd: SixtyThird  83rd: EightyThird 
4th: Fourth  24th: TwentyFourth  44th: FortyFourth  64th: SixtyFourth  84th: EightyFourth 
5th: Fifth  25th: TwentyFifth  45th: FortyFifth  65th: SixtyFifth  85th: EightyFifth 
6th: Sixth  26th: TwentySixth  46th: FortySixth  66th: SixtySixth  86th: EightySixth 
7th: Seventh  27th: TwentySeventh  47th: FortySeventh  67th: SixtySeventh  87th: EightySeventh 
8th: Eighth  28th: TwentyEighth  48th: FortyEighth  68th: SixtyEighth  88th: EightyEighth 
9th: Ninth  29th: TwentyNinth  49th: FortyNinth  69th: SixtyNinth  89th: EightyNinth 
10th: Tenth  30th: Thirtieth  50th: Fiftieth  70th: Seventieth  90th: Ninetieth 
11th: Eleventh  31st: ThirtyFirst  51st: FiftyFirst  71st: SeventyFirst  91st: NinetyFirst 
12th: Twelfth  32nd: ThirtySecond  52nd: FiftySecond  72nd: SeventySecond  92nd: NinetySecond 
13th: Thirteenth  33rd: ThirtyThird  53rd: FiftyThird  73rd: SeventyThird  93rd: NinetyThird 
14th: Fourteenth  34th: ThirtyFourth  54th: FiftyFourth  74th: SeventyFourth  94th: NinetyFourth 
15th: Fifteenth  35th: ThirtyFifth  55th: FiftyFifth  75th: SeventyFifth  95th: NinetyFifth 
16th: Sixteenth  36th: ThirtySixth  56th: FiftySixth  76th: SeventySixth  96th: NinetySixth 
17th: Seventeenth  37th: ThirtySeventh  57th: FiftySeventh  77th: SeventySeventh  97th: NinetySeventh 
18th: Eighteenth  38th: ThirtyEighth  58th: FiftyEighth  78th: SeventyEighth  98th: NinetyEighth 
19th: Nineteenth  39th: ThirtyNinth  59th: FiftyNinth  79th: SeventyNinth  99th: NinetyNinth 
20th: Twentieth  40th: Fortieth  60th: Sixtieth  80th: Eightieth  100th: Hundredth 
Ordinal Numbers 1 to 20
Ordinal numbers from 1 to 20 are different from the rest. After the number 20, a repeated pattern of ordinal numbers can be observed. Ordinal numbers from 1 to 20 can be listed as follows. 1  First, 2  Second, 3  Third, 4  Fourth, 5  Fifth, 6  Sixth, 7  Seventh, 8  Eighth, 9  Ninth, 10  Tenth, 11  Eleventh, 12  Twelfth, 13  Thirteenth, 14  Fourteenth, 15  Fifteenth, 16  Sixteenth, 17  Seventeenth, 18  Eighteenth, 19  Nineteenth, 20  Twentieth.
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Ordinal Numbers Examples

Example 1: What is the 3rd letter in the word: SUMMERS?
Solution:
In the given word, SUMMERS, the first letter is 'S'. The second letter is 'U'. Similarly, we count the position of the letters in order, like, first, second, third, and so on which denotes ordinal numbers. So, we can see that the letter 'M' comes in the 3rd position. Therefore, the third letter in the given word is 'M'.

Example 2: Sam, Jenny, Mary, and Jack are standing in a queue in the given order. Who is in the fourth position?
Solution:
From the given information, we can say that: Sam is in the first place, Jenny is in the second place, Mary is in the third place, and Jack is in the fourth place. Therefore, Jack is standing in the fourth position. Here, 4th is an ordinal number because it denotes the position of Jack.

Example 3: State true or false with respect to ordinal numbers.
a.) An ordinal number is a number that denotes the position or place of an object.
b.) Ordinal numbers are written as 1^{st}, 2^{nd}, and 3^{rd}, and so on.
Solution:
a.) True, an ordinal number is a number that denotes the position or place of an object.
b.) True, ordinal numbers are written as 1^{st}, 2^{nd}, and 3^{rd}, and so on.
FAQs on Ordinal Numbers
What Does Ordinal Number mean?
Ordinal numbers are the numbers that specify the position of objects. For example, when we say that the books are kept on the 3^{rd} shelf, here 3rd is an ordinal number. Similarly, first, second, twentieth, fiftieth, and so on are ordinal numbers.
What is the Difference Between Cardinal and Ordinal Numbers?
Cardinal numbers denote the count of any object. For example, natural numbers like 1, 2 3, and so on are cardinal numbers. On the other hand, ordinal numbers denote the position or place of an object. For example, 1^{st}, 2^{nd}, 3^{rd}, 4^{th}, 5^{th}, and so on, are ordinal numbers.
How to Write Dates with Ordinal Numbers?
Ordinal numbers are used to mention the dates in English. For example, if we need to write the date of Christmas, we write the month and then the ordinal number of the day. In this case, we say that Christmas is on December 25th. Here, 25th is an ordinal number.
Is Zero an Ordinal Number?
No, 0 cannot be considered an ordinal number. Specifying the position of anything as 0^{th} or zeroth does not give a logical explanation.
How to Write Ordinal Numbers?
Ordinal numbers have a suffix added at the end. They can be written as first, second, third, and so on when expressed in words. When ordinal numbers are expressed as numerals, the last two letters of the words are added to the respective numbers, like, 1^{st}, 2^{nd}, 3^{rd}, 4^{th}, and so on.
Why do we use Ordinal Numbers?
We use ordinal numbers for specifying the position or order of something. For example, the pens are kept in the 3^{rd} drawer from the top, or, Ria stays on the second floor of the apartment. Here, the respective numbers specify the position or order of the object or people, whatever the case may be.
What are Ordinal Numbers From 1 to 10?
The ordinal numbers from 1 to 10 are as follows: 1st: First, 2nd: Second, 3rd: Third, 4th: Fourth, 5th: Fifth, 6th: Sixth, 7th: Seventh, 8th: Eighth, 9th: Ninth, and 10th: Tenth.
What is the Ordinal Number of 1?
The ordinal of 1 is written as First. In the numeral form, it is represented as 1^{st}.
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