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Ordinal Numbers: Overview, Questions, Preparation

Number System 2021 ( Number System )

Rajdeep Das

Rajdeep Das

Updated on Sep 6, 2021 10:34 IST
Table of Contents
  1. Ordinal numbers
  2. Other numbers
  3. Frequently asked questions (From NCERT)

Ordinal numbers

Numbers can be of different types, such as ordinal numbers, cardinal numbers, and nominal numbers. In this article, we shall discuss ordinal numbers. In the case of ordinal numbers, an exact position of something or a person at any place is indicated using the adjective terms to denote a number. The numbers indicating the positions are written as 1st or first, 2nd or second, 3rd or third, 4th or fourth, 5th or fifth, 6th or sixth, and so on.

Here is a list of ordinal numbers from 1 – 50.

1st or Firs

2nd or second

3rd or third

4th  or fourth

5th or fifth

6th or sixth

7th or seventh

8th or eighth

9th  or ninth

10th or  tenth

11th or eleventh

12th or twelfth

13th or thirteenth

14th  fourteenth

15th fifteenth

16th or sixteenth

17th or seventeenth

18th or  eighteenth 

19th or Nineteenth

20th or  Twentieth

21st or Twenty-First

22nd or Twenty-Second

23rd or Twenty-Third

24th or  Twenty-Fourth

25th  or Twenty-Fifth

26th or Twenty-Sixth

27th or Twenty-Seventh

28th or  Twenty-Eighth

29th or Twenty-Ninth

30th or Thirtieth

31st or Thirty-First

32nd or Thirty-Second

33rd or Thirty-Third

34th or Thirty-Fourth

35th or Thirty-Fifth

36th or Thirty-Sixth

37th or Thirty-Seventh

38th or Thirty-Eighth

39th or Thirty-Ninth

40th or  Fortieth

41st or Forty-First

42nd or Forty-Second

43rd or Forty-Third

44th or Forty-Fourth

45th or Forty-Fifth

46th or Forty-Sixth

47th or Forty-Seventh

48th or Forty-Eighth

49th or Forty-Ninth

50th or Fiftieth

Other numbers

Cardinal numbers are counting numbers in their noun form to represent the number of living or non-living things. For example, one, two, three, four, five, six, seven, eight, nine, ten, eleven, and so on. There are four books on the table. I take two spoons of sugar in my tea; she has ten different pens, etc.

Nominal numbers are the numbers used for different purposes, such as identifying objects, devices, or areas. Like area pin code, numbers on the vehicles, IP address of a device, or a player’s jersey number in any match. For example, Virat Kohli’s jersey number is 18, or an area pin code like 700001, etc.

Frequently asked questions (From NCERT)

Q: Where are ordinal numbers used?

A: Ordinal numbers can be used in any subject to denote a position, be it maths, physics, or English.

Q: Give some instances of the usage of ordinal numbers in real life.

A: Some instances like Newton’s first law, Newton’s second law, Newton’s third law, ranking system in colleges like first class, second class, third class, or ranking in any competition can be cited as examples.

Q: State the difference between ordinal, nominal, and cardinal numbers.

A: This can be described as the nominal number for Virat Kohli’s jersey is 18, but he is the third player in the Indian cricket team, and there are eleven players in a cricket team. Hopefully, this explains the difference.

Q: How does it help in the ranking?

A: It helps in doing sums like sitting arrangements, ranking, etc.

Q: What is the ordinal number for 1000?

A: It is written as 1000th or thousandth.  Examples :
  • Sima stood first in her class.
  • Rohan stands second to the left of  Raj.
  • Mita stays on the tenth floor of the apartment.
  • The fifteenth row of trees in the orchard has many apples.
  • It is my third class that I am attending online.
  • The girl in the seventeenth position is wearing a hat.
  • Sita sits third to the right of Gita.
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