SAT PREP LIBRARY
Practice SAT Math with CountOnX — and understand every mistake.
Start with a diagnostic, get a focused SAT Math plan, and practice the skill that will help you most. CountOnX connects a missed answer to the step to check, then lets you retry and build evidence over time.
Your CountOnX SAT Math plan
- Take the 16-question diagnostic across all four SAT Math domains.
- Follow your personal skill plan, including prerequisite gaps when they matter.
- Use feedback, retries, and a new question to check whether the idea transfers.
CountOnX SAT Math coverage
253 published original questions across all 43 mapped SAT Math subskills. Each subskill has a five-question foundation. 25 additional original questions are in educator review and are not included in student practice until deliberately released. We do not reproduce or host College Board copyrighted questions.
Advanced Math
76
original questions · 14 mapped subskills
Algebra
70
original questions · 12 mapped subskills
Geometry and Trigonometry
63
original questions · 10 mapped subskills
Problem-Solving and Data Analysis
44
original questions · 7 mapped subskills
FAMILIAR DIGITAL-TEST FORMATS
Practice familiar digital SAT Math formats.
CountOnX uses original questions in familiar digital SAT Math formats: multiple-choice questions, student-produced numeric answers, data tables, labeled geometry figures, and coordinate-plane graphs when a visual is needed. It does not copy Bluebook or College Board content, and its practice report is not an official score.
245
Multiple choice
Choose the best answer and review the skill behind a miss.
8
Numeric answers
Type a number, decimal, or fraction. Scoring happens on the server.
3
Data tables
Read relationships and data directly from an accessible table.
2
Geometry figures
Use labeled, screen-reader-described triangle diagrams when needed.
3
Coordinate graphs
Read accessible lines, systems, and scatterplots with a full text description.
1 · Diagnose
Find the skill behind a miss
Your diagnostic identifies a starting point across Algebra, Advanced Math, Problem-Solving and Data Analysis, and Geometry and Trigonometry.
2 · Practice
Practice one useful skill
Each original question has an answer key, progressive hints, and a worked explanation. Deterministic mistake tags are used only when the wrong answer supports one clear diagnosis.
3 · Prove it
Retry, then apply the idea again
CountOnX records real attempts and does not call a skill mastered after one correct answer. Repeated unaided evidence is required.
Official SAT paper practice
Optional printable practice from College Board. Paper PDFs are nonadaptive, unlike Bluebook’s adaptive digital practice. CountOnX is independent and does not host or reproduce College Board questions.
Official SAT paper practice tests
Optional full-length, nonadaptive PDF practice tests from College Board, with scoring guides and answer explanations. These are not the adaptive Bluebook digital-practice experience.
View official paper practice