Pre-algebra

Topics, in order

1. Exponent rules and scientific notation
2. Square roots and irrational numbers
3. Linear equations in one variable
4. Slope and graphing lines
5. Functions as input–output rules
6. Systems of two linear equations
7. Pythagorean theorem
8. Transformations, congruence, and similarity

Final exam

A few questions from every topic, to check you are ready to move on.

Learn from

• Khan Academy, the course for this step ›
• OpenStax, Prealgebra

Move on when

You can graph a line from its equation and find where two lines cross.