Get Ready for Success Know Your Calculator: Make sure your calculator is the one you're used to, works perfectly, and is in degree mode (DEG). If your calculator is in degree mode, you will see a "D" or "DEG" on the display. Use the calculator for any calculation, even simple ones, to avoid silly mistakes under pressure. Familiarise yourself with how to reset your calculator should you need to during the exam. Watch the video below. Know Your Key Formulas: Briefly glance