1
Linear Reasoning
Solving linear equations, linear word problems, slope and linear functions, systems of equations, and inequalities. Maps to the full Algebra domain, the biggest single slice of the test alongside Advanced Math.
SAT Math Units
College Board organizes the Digital SAT Math section into four content domains: Algebra at roughly 35% of the section (about 13-15 questions), Advanced Math at roughly 35% (about 13-15 questions), Problem-Solving and Data Analysis at roughly 15% (about 5-7 questions), and Geometry and Trigonometry at roughly 15% (about 5-7 questions). Mistake Master splits those four domains into six teachable units: one unit for each domain, with Problem-Solving and Data Analysis divided into a proportional-reasoning unit and a dedicated data-and-statistics unit, plus a cross-cutting strategy unit for the traps that show up everywhere.
Content domains
4
Mistake Master units
6
Heaviest domains
Algebra · Adv Math
Their share
~35% each
2
Nonlinear Algebra
Exponents and radicals, factoring, quadratics and parabolas, rational, radical, and absolute-value equations, and function notation. Maps to the Advanced Math domain.
3
Proportional Reasoning and Percentages
Ratios and rates, unit conversion, percentages, proportional relationships, and mixtures and weighted averages. The first half of the Problem-Solving and Data Analysis domain.
4
Data, Statistics, and Probability
Tables and graphs, center and spread, scatterplots and lines of fit, probability, and sampling and inference. Together with Unit 3, this covers the Problem-Solving and Data Analysis domain, roughly 15% of the section (about 5-7 questions).
5
Geometry and Trigonometry
Lines, angles, and triangles, right triangles, right-triangle trigonometry, circles, and area and volume. Maps to the Geometry and Trigonometry domain.
6
Strategy and Trap Recognition
Answering the question actually asked, units and scale discipline, sign and boundary discipline, grid-in mechanics, and recognizing trap answers across all content. Not a College Board domain; it drills the mistakes that cut across all four.
All six units are fully built with diagnostics, drills, lessons, and cumulative exams. For the bigger picture, see the exam guide, practice hub, formula reference, score calculator, and how hard is SAT Math.