Ordinal number - Definition and examples.

An ordinal number is a number used to tell the order, or the position of an item in a list.

For example, Marc is the third person in line. This means that Mark is in position #3 or there are two people in front of Marc.

The first 20 ordinal numbers are

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

10th

First

Second

Third

Fourth

Fifth

Sixth

Seventh

Eighth

Ninth

Tenth

11th

12th

13th

14th

15th

16th

17th

18th

19th

20th

Eleventh

Twelfth

Thirteenth

Fourteenth

Fifteenth

Sixteenth

Seventeenth

Eighteenth

Nineteenth

Twenty-first

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Math words beginning with the letter o

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