SAT Math

A comprehensive course to master all the mathematical concepts, skills, and strategies needed to succeed on the SAT exam.

Numbers and OperationsAlgebra and Linear EquationsData Analysis and Problem Solving
Quadratic Equations and PolynomialsFunctions and Nonlinear RelationshipsGeometry and Trigonometry
Budgeting and Financial MathInterpreting Data in the NewsMath in Sports and Design
Plugging In NumbersEliminating Wrong AnswersTime Management on the SAT
Numbers and Operatio...Algebra and Linear E...Data Analysis and Pr...Quadratic Equations ...Functions and Nonlin...Geometry and Trigono...Budgeting and Financ...Interpreting Data in...Math in Sports and D...Plugging In NumbersEliminating Wrong An...Time Management on t...
Study Strategies

Plugging In Numbers

Turn Variables Into Numbers

When a problem uses variables, try picking simple numbers (like 2 or 5) to replace them. Do the math with your chosen numbers—sometimes, this makes the solution obvious or helps eliminate wrong answers.

When to Use It

  • Problems with variables in answer choices
  • Word problems with 'in terms of' questions

Quick Tip

Check that your chosen numbers don't break any rules in the problem!

Examples

  • Let x = 2 in an equation to see which answer fits.

  • Pick easy numbers for percent problems to simplify calculations.

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Eliminating Wrong Answers