Help me

[jawad]

We say ' The fifth ' when its write ' 15th '
so what about : ' 11th '
' 12th '
' 21th '
How we can say it ?

[riverkid]

We say ' The fifth ' when its written ' 15th '

No, Jawad. fifth = 5th

fifteenth = 15th

so what about : ' 11th ' = eleventh
' 12th ' = twelfth
' 21th ' = twenty first
How can we say these?

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[blouen]

Fifth is written ´5th´

15th - fifteenth
11th - eleventh
12th - twelfth

And we don´t have 21th but :
21st - twenty-first