In British English 'Question tags' is very common. But in American English the tags right and OK are used.
A question tag is the short question that is placed at the end of a statement. We use a question tag to ask if something is true, or to ask somebody to agree with us. It is usually used in speech. We don't use one tag all the time.
Question tags- aren't we? will you? shall we? isn't it? was he? etc.
We are going there, aren't we? (American English- We are going there, right?)
Let's play cricket, shall we? (American English- Let's play cricket, OK?)
[ I am your teacher, aren't I?
They weren't playing football, were they? ]