Here we convert the cardinal number eighty-one (81) to an
ordinal number. This is useful if you want to use the number 81 as an
adjective when you speak or write it.
There are two ways of writing 81 as an ordinal number, either with letters
and numbers or just letters as follows:
81st
eighty-first
When would you be using the ordinal instead of the cardinal version of 81
you ask?
You use 81 (cardinal) if you are describing how many of something, and you use 81st (ordinal) if you
are describing a position or rank of something.
Like we mentioned above, remember to use the ordinal version of 81 when
81 is used as an adjective.
Convert 82 cardinal to ordinal
Go here for the next number we converted from cardinal to ordinal.
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