Yeah, well as someone who botched everything, I'd say the majority of the maths questions are not actually all that hard (except the [big number] dividied by [something-teen] question), but practice, technique, time-management, concentration, how much sleep you've had, yada yada, are all important. In one test I hurried past time-consuming questions only to finish with time to spare (you cannot go back - doh!), in another test I pondored too long and ran out. Have fun and good luck!