100 hand-selected, high-difficulty core problems spanning the full AMC 8–12 range, organized into 7 chapters that build from foundational arithmetic up to AMC12-level reasoning. Every answer is programmatically verified.
Choose a preset or drag the slider (10–180 minutes). When time runs out, the test locks automatically and scores whatever you've answered.
Unanswered questions are excluded. Only what you got wrong is shown, with the full explanation.