Learn the basics of algebra—focused on common mathematical relationships, such as linear relationships.

Learn pre-algebra—all of the basic arithmetic and geometry skills needed for algebra.

This Basic geometry and measurement course is a refresher of length, area, perimeter, volume, angle measure, and transformations of 2D and 3D figures. If you are learning the content for …

Khan Academy's Algebra 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience! **Teaching this course? Check out our [teacher resources] …

Test your knowledge of the skills in this course. Start Course challenge

This Arithmetic course is a refresher of place value and operations (addition, subtraction, division, multiplication, and exponents) for whole numbers, fractions, decimals, and integers. If you are …

Unit 7: Probability Unit mastery: 0% Basic theoretical probability Probability using sample spaces Basic set operations Experimental probability Randomness, probability, and simulation …

Writing algebraic expressions introduction Learn Writing basic expressions with variables Writing basic expressions with variables Writing expressions with variables Writing expressions with …

Learn seventh grade math aligned to the Eureka Math/EngageNY curriculum—proportions, algebra basics, arithmetic with negative numbers, probability, circles, and more.

A summary of the math and science preparation that will help you have the best experience with electrical engineering taught on Khan Academy. Become familiar with engineering numbers …