Key is know your precalc. Especially if you haven't touched that stuff in a while, you'd tend to forget. Know differentiation, algebra, trigonometry, etc. Know that in DEPTH, even if you did well in precalc back in high school. I'd say well over 90% of the quantitative section is precalc. The rest is rounded out by some simple calculus problems.
In this section, you must time manage. Don't bother dwelling on problems that you can't get to working out within 3-5 secs. If you have to pause longer than that, you know you better move on to an easier one because #1-48 are all worth 1 mark. Go for the ones that you know you can solve, like simple substitution questions. I managed to get my unsolved questions down to 4-5 by doing this.
