Pre-Algebra· Study notes
Foundations
The bridge from arithmetic to algebra: integers, fractions, decimals and percents made rigorous, then variables, equations, the coordinate plane and basic geometry.
What you'll be able to do
- Translate words into expressions and equations
- Solve one- and two-step equations and inequalities
- Use proportions, percents and exponent rules
- Read and draw graphs on the coordinate plane
Read the notes as a guided lesson
Walk the notes one box at a time — prose, worked examples, quick checks — with a timed practice round after every section. For the full course with interactive lessons, go back to the course.
Every test ends with a score by topic and a list of what to revisit. Test out of a topic with 80% or better to mark it mastered.
Topics
Equations & Inequalities
12 lessonsSolving one-step and two-step equations and inequalities
The Coordinate Plane
9 lessonsPoints, quadrants, tables, and graphing lines
Geometry Basics
10 lessonsPoints, angles, shapes, and the formulas that measure them
Data, Statistics & Probability
10 lessonsMeasures of center and spread, reading and making graphs, interpreting data, and finding the probability of events as fractions, decimals, and percents
Whole Numbers & Operations
10 lessonsPlace value, rounding, the four operations, order of operations, and exponents
Integers
11 lessonsEverything you need to know about negative numbers
Factors & Multiples
10 lessonsEverything about factors, multiples, primes, GCF, and LCM
Fractions
12 lessonsEverything you need to master parts of a whole
Decimals
10 lessonsEverything you need to master decimal place value, operations, and word problems
Ratios, Rates & Proportions
9 lessonsWriting and simplifying ratios, equivalent ratios, unit rates and best buys, solving proportions, scale drawings, and similar figures
Percents
10 lessonsWhat percent means, converting among fractions/decimals/percents, the three percent problems, percent change, and real-world money math
Rational Numbers
11 lessonsFractions and decimals, positive and negative, all in one family
Exponents & Roots
11 lessonsPowers, exponent rules, scientific notation, square roots, and order of operations