Lessons, problems, and timed tests for AMC 8 MathCounts SASMO AMO
Eight self-contained lessons. Each one teaches the concept, names the tricks, walks worked examples from real AMC problems, then sends you to practice.
Pick the spot in the test you want to drill. Problems #1–5 are warm-ups, #6–10 step up, #11–20 are harder, and #21–25 are stretch.
Every contest from 1985 to 2026 (no 2021 — no contest that year). Click a year to see all 25 problems with hints, solutions, and the official answer.
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