If you want to say "It is 11:30", it would be "Son las once y media". If you want to add whether it is AM or PM, you would add "por la mañana" or "por la noche" respectively.
It's 10:30= Son las diez y media. at 10:30= ...a las diez y media
30=treinta
Treintatreinta
Strangely enough, there is no word in Spanish to represent sock. To say socks in Spanish, you say "medias", but you cannot say "media" because media means 30, as in 2:30.
diez
How to say 9:30 in Spanish
Ojalá tuviese 30 años menos
Tengo diez años
El precio/valor es 10
Cena para diez
On the Up - 2007 Spanish Albums 1-10 was released on: USA: 30 January 2007
30 de mayo (treinta de mayo)