Full test

80 questions, 10 minutes

• Answer in order. Once you move on, the question is closed.
• +5 for each correct answer, −4 for each wrong one.
• A skipped question costs −4 — but only if you answer something later. Everything past your final answer is not scored at all.
• Problems marked * take an approximate answer: any whole number within 5% is correct. There are eight of them, at every tenth question.
• Mental arithmetic only. No calculator, no paper.