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Pre-Algebra
Order of operations, fractions, negatives, exponents, and proportions — the toolkit you need before algebra makes any sense.
5 lessons · ~46 min total · 12-question quiz
Lessons
- 01
Order of Operations (PEMDAS)
Why the order matters, and the negative-sign trap that catches everyone.
- 02
Fractions, Decimals, and Percents
Three notations for the same value — and how to switch fluently.
- 03
Negative Numbers & Integer Operations
The number line, absolute value, and the sign rules that never change.
- 04
Exponents and Roots
Laws of exponents, simplifying radicals, and what fractional exponents mean.
- 05
Ratios, Proportions, and Unit Rates
Cross-multiply to solve proportions, and compare prices fairly.
Section quiz
12 questions covering the lessons above. Instant feedback on each, full review at the end.
Start the quiz