Here we convert the cardinal number seven hundred twenty-one (721) to an
ordinal number. This is useful if you want to use the number 721 as an
adjective when you speak or write it.
There are two ways of writing 721 as an ordinal number, either with letters
and numbers or just letters as follows:
721st
seven hundred twenty-first
When would you be using the ordinal instead of the cardinal version of 721
you ask?
You use 721 (cardinal) if you are describing how many of something, and you use 721st (ordinal) if you
are describing a position or rank of something.
Like we mentioned above, remember to use the ordinal version of 721 when
721 is used as an adjective.
Convert 722 cardinal to ordinal
Go here for the next number we converted from cardinal to ordinal.
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