Ordinal Numbers

My Definition

Key Characteristics

The following are true of ordinal numbers:

  • An ordinal number represents the position of people or things placed in an ordered sequence.

  • An ordinal number is a whole number that identifies the position of a number or an object in an ordered set or list.

  • For numbers greater than two, ordinal numbers are used to name the denominators of fractions.


Use the link below to further study examples of ordinal numbers.

Ordinal Numbers Activity 1
Ordinal Numbers Activity 2



9 is a cardinal number.

1 2

1 2
is a rational number.

TEKS: This term is not explicitly covered in the Mathematics TEKS.