How to Use Your Calculator Like a Pro
Your scientific calculator is far more than an adding machine. Under exam conditions, it is a tool that can save you minutes of manual labor and protect you from simple computational errors. Beyond Basic Arithmetic Most IGCSE students know how to use the basic functions, but fewer are experts at the "SOLVE" function for linear equations or the statistical modes for calculating the mean and standard deviation. Using these features correctly can significantly speed up your exam pace. The "Mode" Discipline The most frequent way students drop marks is leaving their calculator in the wrong mode—specifically, using Radians instead of Degrees for trig. This error is devastating because it’s usually avoidable. Another common pitfall is inputting complex fractions without brackets, leading to order-of-operation errors. The best IGCSE math tutors insist that their students verify their calculator settings at the start of every single exam. Conclusion Don't leave y...