Grade 8 math
Lessons commonly taught in grade 8, each with worked examples, practice problems, and complete solutions. Topics often span more than one grade, so you may see a lesson listed under a neighbouring grade too.
6 lessons · 7 standards
Algebra and Equations
- How to Solve Literal Equations and Rearrange Formulas
Rearrange a formula to solve for any variable using the same inverse operations you use on numbers, with worked examples from geometry, physics, and finance.
- How to Solve Multi-Step Equations
Solve multi-step equations by distributing, combining like terms, then undoing operations in reverse order, with worked examples and practice problems.
- How to Solve Multi-Step Inequalities
Solve multi-step inequalities by distributing, combining like terms, and undoing operations in reverse order, including when to flip the inequality sign.
- The Quadratic Formula: How and Why It Works
Learn the quadratic formula, where it comes from, and how to use it to solve any quadratic equation, with worked examples and practice problems.
- How to Solve Two-Step Equations
Solve two-step equations by undoing addition first and multiplication second, with worked examples, common mistakes, and practice problems with full solutions.
- Solving Equations with Variables on Both Sides
Solve equations with variables on both sides by collecting variable terms on one side, plus how to recognise no solution and infinitely many solutions.