1
If 3x + 7 = 25, what is the value of x?
- A4
- B6
- C8
- D18
Show the answer and explanation
Correct answer: B
3x = 18, so x = 6.
SAT Math
SAT Math - every answer worked out.
Math in the style of the digital SAT: multiple-choice and grid-in (student-produced) questions, a built-in calculator and a reference sheet. Every question has a worked solution.
In the Trylab bank: 2 tests · 44 questions · 1 free
Digital SAT: 2 modules
The official Math section has 44 questions in 70 minutes; module 2 adapts to module 1.
The calculator is always there
You can use the calculator and reference sheet throughout Math.
4 domains
Algebra, Advanced Math, Problem-Solving and Data Analysis, Geometry and Trigonometry.
Question types
The questions in our bank - by type and count.
- Advanced math15 questions
- Algebra11 questions
- Problem solving9 questions
- Geometry9 questions
Sample questions
From our free tests - with the answer and the explanation.
2
A circle has an area of 49π square units. What is the radius of the circle?
- A7
- B14
- C24.5
- D49
Show the answer and explanation
Correct answer: A
πr² = 49π, so r² = 49 and r = 7.
3
A population of bacteria doubles every 3 hours. If there are 500 bacteria at the start, how many will there be after 12 hours?
- A2,000
- B4,000
- C6,000
- D8,000
Show the answer and explanation
Correct answer: D
12 hours = 4 doublings: 500 × 2⁴ = 8,000.
Preparation tips
- 01
Grid-in answers can be fractions or decimals - both are accepted.
- 02
Use the calculator, but simple arithmetic is faster in your head.
- 03
Cross out wrong options (ABC) to narrow the choice.
- 04
Don't sink time into a hard question - flag it and come back at the end.
- 05
Check what's being asked: x, or 2x?
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FAQ
Is Trylab's SAT adaptive?
No - our tests don't adapt, so the 400-1600 score is given as an estimate.
Is there a calculator?
Yes - Math has a built-in calculator and a reference sheet.
What is grid-in?
A question without options: you enter the answer yourself - a whole number, a fraction or a decimal.
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