Pre-Algebra

The building blocks of all math — variables, expressions, and basic equations.

Topics covered:Variables & expressionsOrder of operationsIntegersFractions & decimalsRatios & proportionsBasic equations

Step-by-Step Example

Work through this example one step at a time — or reveal all steps at once.

Example Problem

Solve for x: 2x + 5 = 13

Step 2 — reveal when ready

Step 3 — reveal when ready

Step 4 — reveal when ready