Be sure to take at least one full timed practice SAT before your sit your actual exam. It’s impossible to anticipate your performace under time contstraints without training them at least a little bit beforehand. Practicing the test in the time limits you’ll be facing also helps you develop time-management techniques that work for you—techniques which you will rely on heavily when you take the real test later on.
Also remember the most important time-managment technique available: Devote your energies to the questions you can solve, and skip or guess on those you can’t.
SAT Prep Plan: SAT Tips 
