Tuesday, 9 April 2013

About Numbers

Cardinal, Ordinal, and Nominal Numbers

cardinal number tells "how many." Cardinal numbers are also known as "counting numbers," because they show quantity.
Here are some examples using cardinal numbers:
  • 8 puppies
  • 14 friends

Ordinal numbers tell the order of things in a set—first, second, third, etc. Ordinal numbers do not show quantity. They only show rank or position.
Here are some examples using ordinal numbers:
  • 3rd fastest
  • 6th in line
nominal number names something—a telephone number, a player on a team. Nominal numbers do not show quantity or rank. They are used only to identify something.
Here are some examples using nominal numbers:
  • jersey number 4
  • zip code 02116

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