Elon.io is an online learning platform
We have an entire course teaching Spanish (Spain) grammar and vocabulary.
Questions & Answers about Tengo uno.
Why is the word for one uno here instead of un?
Does uno change if I am talking about a feminine object?
Yes. If you want to say that you have one, but you are referring to a feminine noun like manzana (apple), you must say Tengo una. You only use uno for masculine objects or when you are just counting numbers in general.