Soundwave -
Speed distance time calculations will be the most useful, closely followed by 60x tables and variants of i.e 30x, 15x, 20x etc. Should help with some of the maths questions.
If you need a calculator, get rid of it now and start practicing without using one; you can create your own DST problems when driving round. Fractions and decimals are also handy to have in your back pocket, as would an understanding of the principles of calculating relative velocities.
Do some of those spatial awareness problems and start to improve your short term memory - upto 10 or so digits should see you fine.
Make sure you aren't too good at working out angles / bearings etc on a screen - pass that one and you're half way there to becoming a Fighter Controller or whatever they are this week!
Above all, don't worry - it isn't rocket science - you will make the questions harder than they actually are. It's called self-induced pressure, and it crops up in spades during IOT. I believe there is a site called the student room or something like it, which has lots of aptitude / maths stuff on it.