How the real test works

• 80 questions in 8 minutes (~6 sec/question)

• Multiple choice — 4 close answer options

• +1 correct, −1 wrong — penalty for mistakes

• Mix of integers, decimals, and fractions

• Pass threshold: 56+ · Competitive: 70+

Speed Tactics for 80-in-8

•Skip tough problems immediately. Each question is worth the same +1/-1

•Use process of elimination on multiple choice. Rule out obviously wrong answers

•Round decimals to nearest half for quick mental estimates

•For fractions: convert to decimals if easier (1/4 = 0.25, 3/8 = 0.375)

Master Mental Math for Quantitative Trading Roles

The Optiver 80-in-8 is the toughest mental math test used by quantitative trading firms. You get 80 problems covering integers, decimals, and fractions. Time limit: 8 minutes.

Why Mental Math Speed Matters in Trading

Fast math equals fast money in trading. Traders calculate option Greeks, hedge ratios, and position sizes in seconds. The 80-in-8 test mimics this pressure.

Test Format and Scoring Strategy

• 80 questions in exactly 8 minutes (6 seconds per problem average)
• Multiple choice format with 4 strategically designed answer options
• +1 point for correct answers, -1 point for incorrect answers
• Pass threshold: 56+ points | Competitive score: 70+ points

How to Train

Traders who pass this test practice arithmetic drills daily. They focus on shortcuts and pattern recognition:

Memorize multiplication tables up to 15×15
Practice decimal operations with rounding tricks
Learn fraction shortcuts for quick simplification
Use elimination on multiple choice questions

Industry Applications

Jane Street, IMC Trading, and other top firms use similar math tests. The speed and accuracy you build here transfers directly to real trading.

Optiver 80-in-8