Question

Yo tengo tres años.
Means?

Answer 1

It means, "I am 3 years old."

Once again lol, If your native tongue is Spanish then it means, "I have 3 years."

For help in the future: tengo means to have and  años means age. Tres is the number 3. 

Hope this helps. c:

Answer 2

I am three years old.