How the word "treinta" is translated into English
Mi hermano tiene treinta años.
[mj eɾˈmano ˈtjene ˈtɾejnta ˈaɲos.]
My brother is thirty years old.
¿Hace treinta grados hoy?
[¿ˈaθe ˈtɾejnta ˈɣɾaðos ˈoj?]
Is it thirty degrees today?
El mes tiene treinta días.
[el ˈmes ˈtjene ˈtɾejnta ˈðias.]
The month has thirty days.
"treinta" is in the lesson "Big numbers" (Level 4), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,369 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.