Cardinal, Ordinal & Nominal numbers logo

Cardinal: how many


Ordinal: position


Nominal: name





Cardinal, Ordinal and Nominal Numbers


Cardinal Number

A Cardinal Number is a number that says how many of something there are, such as one, two, three, four, five etc...


Example: Here are ten apples:

Cardinal numbers example picture

It does not have fractions or decimals, it is only used for counting.


Remember: "Cardinal is Counting".

Ordinal Number

An Ordinal Number is a number that tells the position of something in a list, such as 1st, 2nd, 3rd, 4th, 5th etc.


Example: In this picture Seema is 1st:

Ordinal numbers example picture

And Yasmin is 2nd and Rob is 3rd.


Remember: "Ordinal says what Order things are in".

Nominal Number

An nominal Numbers is a number used only as a name, or to identify something (not as an actual value or position)


Examples:

  • The number this jersey is "7"
  • A zip code: "91210"
  • A model number: "380"
Nominal numbers example picture

Remember: "Nominal is a Name".

Example With Everything

Cardinal ,Ordinal, Nominal Numbers example

In this photo there are 6 cars. Car Number "99" (with the yellow roof) is in 1st position:


  • 6 is a Cardinal Number (it tells how many)
  • 1st is an Ordinal Number (it tells position)
  • "99" is a Nominal Number (it is basically just a name for the car)

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