Pre-Algebra

Pre-algebra is typically the first math course in high school, and it builds the foundation you'll need for algebra and everything that comes after. In this course you'll work with integers, fractions, equations, inequalities, ratios, percentages, basic probability, and an introduction to  geometry.

The course is divided into 10 chapters, and each chapter is broken down into individual lessons. Every lesson includes a clear explanation, worked examples, and a free video walkthrough, so you can learn at your own pace whether you're catching up, getting ahead, or just need a refresher before a test.

Start with the first chapter below, or jump straight to the topic you're stuck on.