8th Grade Math

Algebra foundations, geometry, and mathematical modeling for eighth grade students.

Linear Equations and ExpressionsFunctions and GraphsIntro to Geometry: Angles and Shapes
Systems of EquationsPythagorean TheoremVolume and Surface Area of 3D Shapes
Budgeting and Saving with AlgebraGeometry in Construction and DesignModeling and Interpreting Data
Breaking Down Word ProblemsChecking Your Work and Estimating
Linear Equations and...Functions and GraphsIntro to Geometry: A...Systems of EquationsPythagorean TheoremVolume and Surface A...Budgeting and Saving...Geometry in Construc...Modeling and Interpr...Breaking Down Word P...Checking Your Work a...
Study Strategies

Checking Your Work and Estimating

Double-Check and Estimate

Before finishing any math problem, pause to check your work. Estimate the answer first to see if your solution is reasonable. Reread the problem and verify each step. Estimation can help you quickly spot mistakes and boost your confidence on tests.

Examples

  • Estimate the sum before adding to see if your answer makes sense.

  • After solving for \(x\), plug it back into the original equation to check.