Cardinal numbers are one, two, three, four, ...
Ordinal numbers are first, second, third, fourth, ...
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Ordinal numbers suggest order such as first, second, third etc. Cardinal numbers are counting numbers. One, two, three, etc.
Ordinal. The way to remember it is that it pertains to things in order in a series.
Ordinal numbers refers to numbers in order, e.g. 1st, 2nd, 3rd, 4th and so on. Cardinal numbers refers to numbers as they are when counting - e.g. 1, 2, 3, 4 etc.
Surprisingly, it is called an ordered list of numbers!
A number with 22 DIGITS (not numbers) is of the order of a sextillion.