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

Aprende preálgebra: todas las habilidades fundamentales de aritmética y de geometría necesarias para el álgebra.

Learn patterns in math with Khan Academy's interactive lessons and practice questions, tailored to enhance your understanding and problem-solving skills.

Understanding and finding factors and multiples. After these videos, you'll be ready for fractions.

In this topic, we will look at 1- and 2-step equations, as well as expressions and inequalities.

Up next for you: Solutions of systems of equations Get 3 of 4 questions to level up!

Aprenda pré-álgebra — todas as habilidades básicas da aritmética e geometria necessárias para álgebra.

Learn all about proportional relationships. How are they connected to ratios and rates? What do their graphs look like? What types of word problems can we solve with proportions?

Learn about exponents, order of operations, and related math concepts through engaging lessons and practice exercises on Khan Academy.

Equations with variables on both sides: decimals & fractions Get 3 of 4 questions to level up!