High school math: Algebra 1, Geometry and Algebra 2

AP Precalculus and AP Calculus assume the algebra and geometry of the courses before them. Often, when AP math feels hard, the new idea is fine; it's an old step, like factoring or a slope, that never quite settled. Here you can practice those courses unit by unit, see exactly where you are, and fix it.

240 original questions, each with a short worked solution. Unit names follow the usual Common Core course structure.

Not sure where you stand?

Take the Ready for AP? check: 12 questions, about ten minutes. It tells you whether to start AP Precalculus or AP Calculus AB, or which units here to fix first.

Algebra 1

Linear equations and inequalities, functions, systems, exponents, polynomials and quadratics: the algebra every later course is built on.

Unit 1 · Unit 2 · Unit 3 · Unit 4 · Unit 5 · Unit 6 · Unit 7

Geometry

Transformations, congruence and similarity, right triangle trigonometry, circles, area and volume, and coordinate geometry.

Unit 1 · Unit 2 · Unit 3 · Unit 4 · Unit 5 · Unit 6 · Unit 7

Algebra 2

Polynomial and rational functions, radicals and complex numbers, exponentials and logarithms, trigonometric functions, and sequences and series.

Unit 1 · Unit 2 · Unit 3 · Unit 4 · Unit 5 · Unit 6

How it works

Pick a unit and try each question on paper first. When you're stuck, or to check your working, tap "Show me how" for a short worked solution. A free account opens 20 solutions a day across the site; Pro opens every one.