SAT Math practice

Practice that feels like the real test.

Over 10,000 generated questions, with timed practice and progress on the way. Open source, and built for the Digital SAT Math section.

Explore the question bank View on GitHub

Algebra Linear equations in one variable Difficulty 2 of 3

If 5x − 18 = 2x − 30, what is the value of x?

A 4
B −4 Correct answer
C −2
D −16

Collect the x-terms on one side and the constants on the other: 3x = −12. Divide both sides by 3: x = −4.

Question bank

More than 10,000 questions, each with a worked answer.

Every question is built from a template and a seed, and every answer is computed, never typed.

19 Question templates
28.1M+ Distinct questions
4 Content domains

Algebra

If 4x + 9 = 33, what is the value of x?

A 4 B 6 C 8 D 24

Problem-Solving and Data Analysis

A jacket that costs $80 is on sale for 35% off. What is the sale price?

A $28 B $45 C $52 D $55

Geometry and Trigonometry

Two angles of a triangle measure 48° and 67°. What is the measure of the third angle?

A 55° B 65° C 75° D 115°

Practice tests

In development

Timed practice, true to the format.

Two modules, a running clock, a flag for review and an answer eliminator. The same rhythm as the digital test, so the format holds no surprises on test day.

Module 2 · Question 7 of 22 32:00 Mark for review ABC

A line in the xy-plane passes through the points (2, 5) and (6, 17). What is the slope of the line?

A 1/3
B 2
C 3
D 4

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Progress

In development

See which skills need work.

Every answer feeds a mastery estimate for each of the four domains, so the next session starts where it matters.

Algebra 72%
Advanced Math 58%
Problem-Solving and Data Analysis 81%
Geometry and Trigonometry 46%

Videos

In development

Short lessons, one idea each.

The library will collect free, licensed lessons and pair each one with the skill it teaches.

Linear equations in 8 minutes

8:12

Percent change, step by step

6:40

Angles in triangles and parallel lines

9:05

Open source

Built in public.

Axiom is MIT-licensed, and the whole site is plain HTML, CSS and JavaScript with no build step. Every question generator ships with tests that run it across hundreds of seeds and verify each answer.

View on GitHub