Format, marking, eligibility and past papers for the maths olympiads and contests that matter - every fact on every page sourced to the organiser's own material.
MAA's middle-school entry point — 25 questions, 40 minutes, and no reason ever to leave one blank.
Open entryThe contest Math Kangaroo was modelled on — 30 questions, no penalty, and five integer answers at the end.
Open entryWaterloo's final-year contest — where presentation earns marks and a correct answer alone does not.
Open entryWaterloo's grade 7-8 contest — and one of the few that pays you for leaving a question blank.
Open entryThe middle rung of the UKMT ladder for Year 11 and below — and the point where wrong answers start costing marks.
Open entryThe UK's entry-point maths challenge for Year 8 and below — and the only one of the three with no penalty for guessing.
Open entryAmerica's Kangaroo — 75 minutes, no guessing penalty, and open to grades 1 through 12.
Open entryWaterloo's Grade 9 contest — where Part C stops being multiple choice.
Open entryThe gateway to BMO1 — and the only UKMT challenge where you start with marks in hand and lose them by guessing.
InternationalThe international association behind Math Kangaroo — which sets far less than most people assume.
OlympiadAn online, two-level maths olympiad that starts younger than almost any other — Nursery upward.
OlympiadCREST's summer olympiad — reaching further up the school than CMO, and the one CREST exam that states its guessing rule.
OlympiadIndia's biggest school maths exam — and the source of the most common name confusion in competition maths.