Independent Study Edition · 100 Problems

AMC 10A Foundations

A self-guided problem set built from the hardest AMC 10A topics — sum-free sets, mountain permutations, Vieta's formulas, Descartes' Circle Theorem, angle bisectors, and geometric probability — scaled down so you can learn each idea from scratch and check yourself as you go.

30:00
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How this works. Press Start Test to begin your timer (10–60 minutes). Answer as many of the 100 problems as you can — they're grouped into five 20-question sets that gradually increase in difficulty and cycle through the same core ideas so they stick. Tap a choice to lock it in: you'll immediately see whether you were right and get a short explanation underneath. When time runs out (or you press Finish Now), your score is calculated only from the questions you answered, and a full answer key appears at the end — ready to print.
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Answer Key — All 100 Problems