Hi lynner.
Well, usually for FCA the maths test is simple things like working out currency conversions, time differences, change etc. Don't forget your calculator as you are normally allowed to use this!
Remember to swot up on the company as well because there is an exam based on what you know about the company...fleet, uk bases, routes, number of aircraft, managing director etc.
The english part of the exam is normally a reading comprehension so all the answers are there, it's pretty simple!!
Good luck! x