20 hand-selected, high-difficulty questions covering the errors Korean students make most often — full Bluebook-style testing experience.
20
Questions
35
Minutes
✓
Calculator Allowed
Directions
For multiple-choice questions, select the best answer from the four choices.
For student-produced response (grid-in) questions, enter your numeric answer.
The Desmos graphing calculator is built into this module — toggle it at any time.
An explanation appears immediately after you answer each question, so you can study independently.
All 20 questions are drawn from the algebra, advanced math, problem-solving, and geometry/trig domains that most frequently trip up strong students — this set is deliberately difficult.
Why This Set Is Hard
Every question targets a specific trap: extraneous roots, sign errors, misapplied theorems, or rushed reading.
Master this set and you will have built the reflexes to handle anything the real test throws at you.
Section 2, Module 1: Math35:00
Directions: select the best answer for each question. An explanation will appear as soon as you respond.
1
Enter your answer as an integer, decimal, or fraction (e.g. 168.75 or 675/4).
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SAT Math — Hardest Questions Mock Module
20 questions · Calculator permitted · Work each problem, then check your answers against the key on the final page.