Interview with test - worried

[Lemonbaytree]

I have been invited to an interview which I'm am buzzing about. It said it includes a short test and I have no idea what that means. If it's a math test I'm doomed as I'm not good a maths.
I don't know weather to contact them and ask them what this test entails? The interview is only 30 mins by the looks of it.

What sort of job is it? What are they key responsibilities of the role?

It's a finance job but it's pretty much what I have been doing in previous jobs before. Never needed mental arithmetic as the systems would do it for you.

The test may be excel to see if you can set up a simple spreadsheet.