Either skim through the paper from front to back or back to front to work out what you need to do for each question. Understand what topics, techniques, and formulas could be involved in solving the question. ie. if you see an certain type of integral, find out what basic form it could map to on the formula sheet.
Any remaining time - either try to calm down a bit or check out the multiple choice, if it's there. Nail down some of the earlier questions so you don't miss out on easy marks
