News & Guides
The latest on the AMC
Exam dates, registration, preparation and results for the AMC 8, 10, 12, AIME and the China region.
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AIME 2027 Fixed Thresholds: AMC 10 100 vs AMC 12 85 Target-Setting Audit
For the 2027 AIME cycle, the fixed qualification floors are AMC 10 100 and AMC 12 85. This audit separates paper-specific raw-score targets from percentile comparisons, checks attainable totals under 6/1.5/0 scoring, and shows how to set a practice target without treating the two numbers as equivalent.
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AMC 10/12 Three-Set Venn Counting: A Region-Labeling Diagnostic for Exactly-One vs At-Least-One
Three-set counting questions on the AMC 10/12 usually break at the wording, not the formula: ‘exactly one’ and ‘at least one’ select different Venn regions. This guide gives a label-first routine, a fully checked hypothetical illustration (exactly one = 25, at least one = 38 out of 40), and a three-check audit you can run…
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AMC 10 Past Papers PDF: A Verification Checklist Before You Trust the File
A practical seven-point audit for any AMC 10 past papers PDF: check the year, A/B label, question count, figures, answer key, scoring rule and solution provenance before you use the file for timed practice.
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AMC 10 Test-Day Rules in China 2026: Admission Ticket, Allowed Materials and Answer-Sheet Checks
The AMC 10 test-day rules for the 6 and 14 November 2026 China sittings turn on three administrative checks: which channel issues your ticket, what may sit on the desk, and whether the shared A/B answer card carries the right event, version and phone number.
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AMC 12 Trigonometry: A Unit-Circle Diagnostic for Identity and Equation Questions
A practical AMC 12 trigonometry diagnostic for identity and equation questions. Use four checkpoints—quadrant signs, identity route, interval restriction, and back-substitution—to classify and correct timed errors.
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AMC 10 Past Papers: A Self-Calibrating Difficulty Ladder from Timed Scores
Stop guessing which AMC 10 year is hardest. Use your own timed scores to build a self-calibrating practice ladder that targets pacing and knowledge gaps effectively.
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AMC 10/12 Final 10 Days in China: One Timed Mock to Choose Review vs New Topics
For China-based AMC 10/12 candidates before the 6 November A-paper or 14 November B-paper, use one final timed mock only if your last strict 75-minute mock was more than seven days ago. Otherwise stop testing and review the last timed result. Classify errors as knowledge gaps, pacing failures, or careless slips, then allocate remaining hours…
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USAMO Past Papers: Building a Lemma Bank from Failed Proof Attempts
Struggling to reproduce USAMO proofs after reading solutions? Learn how to extract reusable lemmas and trigger conditions from failed attempts to build active retrieval pathways.
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AIME Past Papers: Reviewing Scratch Work for Setup, Execution, and Verification Errors
Don’t just check the final integer. Use a three-column scratch-work review to distinguish between modeling errors, calculation slips, and missing verification steps in AIME practice.
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AMC 10 Past Papers: Analyzing Wrong Answers to Stop Calling Mistakes ‘Careless’
Stop labeling AMC 10 errors as ‘careless.’ Record which distractor you chose and identify the specific algebraic or counting step that produced it to target your next practice session.