22 hand-picked questions covering exactly the traps that cost Korean students the most points on Digital SAT Math — parallel/coincident systems, extraneous roots, tangency conditions, structure-based algebra, and more. Same look, same tools, same interaction as the real Bluebook app.
22
Questions
35
Min. Suggested
100%
Verified Answers
Instant explanations — as soon as you answer, a full step-by-step solution appears, including the exact trap most students fall into.
Built-in graphing calculator — same Desmos engine as the real exam, drag it anywhere on screen.
Mark for Review & cross out — flag questions and eliminate choices exactly like the real interface.
Print-ready PDF — ink-saving black & white version with a full answer key and explanations, ideal for offline practice.
English only · Self-paced practice
SATpractice
Math — Hardest Mock
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For each question, choose the best answer from the four choices (multiple choice) or enter your answer in the box (student-produced response / "grid-in"). As soon as you submit an answer, a full explanation will appear — use it to learn the concept, then move to the next question. You may use the on-screen Desmos calculator at any time. Fractions in grid-in boxes can be entered as e.g. 20/3; decimals are also accepted.
Question 1 of 22Algebra
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Review every explanation below — the ones you missed are exactly where the most points are hiding.