The Digital SAT Math section is 44 questions across two adaptive modules (22 each), organized into 4 domains and 19 skills. A calculator is allowed throughout -- there is no separate no-calculator section like the old paper SAT. Every problem is self-contained: unlike Reading & Writing, Math questions do not reference a passage.
Algebra and Advanced Math together make up about 70% of the section, so they are worth the most practice time. Problem-Solving and Data Analysis and Geometry and Trigonometry each make up a smaller share but still appear on every test.
| Domain | Weight | Skills |
|---|---|---|
| Algebra | ~35% (13-15 questions) | Linear equations in one variable; linear equations in two variables; linear functions; systems of two linear equations; linear inequalities in one or two variables |
| Advanced Math | ~35% (13-15 questions) | Equivalent expressions; nonlinear equations in one variable and systems of equations in two variables; nonlinear functions |
| Problem-Solving and Data Analysis | ~15% (5-7 questions) | Ratios, rates, proportions, and units; percentages; one-variable data (distributions, center, spread); two-variable data (models, scatterplots); probability and conditional probability; inference from sample statistics and margin of error; evaluating statistical claims |
| Geometry and Trigonometry | ~15% (5-7 questions) | Area and volume; lines, angles, and triangles; right triangles and trigonometry; circles |
Roughly 7 in 10 Math questions come from just two domains. Algebra covers the mechanics most students already recognize from a first algebra course: solving and graphing linear equations, functions, systems, and inequalities. Advanced Math goes a step further into nonlinear territory -- quadratics, exponential and rational expressions, and functions that are not straight lines.
Because these two domains carry the most weight, they are also where an adaptive test gets the most signal about a student's level. On Satestify, Module 2's difficulty for a section is set by how a student performs on Module 1 -- so a strong Algebra/Advanced Math showing in Module 1 routes to a harder, higher-ceiling Module 2, the same two-stage design the real Digital SAT uses.
Problem-Solving and Data Analysis and Geometry and Trigonometry each contribute 5-7 questions, which is not negligible -- together they are close to a third of the section. Problem-Solving and Data Analysis is the most "real-world" of the four domains: ratios, percentages, and interpreting data from tables, scatterplots, and sample statistics. Geometry and Trigonometry is the most traditional -- area, volume, triangle relationships, right-triangle trig, and circles.