Created by IB graduates who know exactly what it takes to succeed.

A Smarter Way to Master IB Maths.

Prime Sums started as a collaboration between three IB graduates. Our content creator, João, completed the IB in 2017 with a maximum score of 45 points. João went on to study computer science at the University of Pennsylvania (UPenn). Since his first year in university, João has been tutoring subjects like maths, physics, chemistry, computer science, and economics to hundreds of students. During this time, João realised there were few online resources where students could learn how to do past IB questions with high-quality, step-by-step solutions.

We’ve been there. We know the struggles, the late-night study sessions, and the frustration of not finding clear, step-by-step solutions to IB Maths problems. That’s why we created Prime Sums—to offer students the exact resource we wish we had when preparing for the IB.

With thousands of past IB questions, detailed solutions, and expert video explanations, Prime Sums makes learning efficient, structured, and stress-free. Whether you’re aiming for a top score or just looking to boost your confidence, we’re here to help you every step of the way!