if you replace anos with años then you say i am thirteen years old
if not you are saying i have 13 anuses no joke.
Tengo trece anos
13 is spelled trece and pronounced 'TRAY-say.'
It means I am eleven years old. Tengo- I have. Once- Eleven. Anos- years.
tengo treinta y cuatro anos is spanish for - I am 34 years old.
I am 19 years old.
It means I am eleven years old. Tengo- I have. Once- Eleven. Anos- years.
I'm thirteen years old.
Tienes trece anos.
"I am nine years old, and you?"
i have 42 years
if you mean reply you would say : Yo tengo # anos.
It means "I am thirteen years old". (The literal translation is "I have thirteen years")