Mental Math Practice
Pure arithmetic speed drills — start with today's free daily set, then move on to a full realistic firm speed test: 80 in 8, Flow Traders, Maven Securities, or SIG. No signup, runs entirely in your browser.
Warm up fast or run a full speed test.
Daily Mental Math
20 questions · 2 minutes · today's set
+1 per correct answer, −1 per wrong answer, skips are free. Same 20 questions for everyone today — a rotating daily set from a fixed 180-day pool.
Today's set comes from a fixed 180-day rotation — the app generates a truly new set every day.
Realistic firm tests
Each of these is one fixed set — the same questions, same order, every attempt — so your score is comparable to anyone else's.
80 in 8 — Mental Math Speed Test
80 arithmetic questions · 8 minutes · typed answers · −1 per wrong answer. Candidate-reported practice benchmark: ~60 net — not an official cutoff.
Optiver-styleAkuna Capital Math Test
80 typed questions · 8 minutes · −1 per wrong answer — a separate fixed set from the Optiver page, matching the publicly reported first OA screen.
Akuna-style 80-in-8Flow Traders Math Test
75 multiple-choice questions · 8 minutes · −2 per wrong answer. TradeMind practice target: 70 net on this 75Q / 8-minute configuration — a training setting, not a firm cutoff.
Training configurationMaven Securities Math Test
40 five-choice questions · 6 minutes · −2 per wrong answer · bar of 34 correct. Candidate-reported practice benchmark: ~34 correct on a reported 40Q / 6-minute format — not an official cutoff.
Shortest formatSIG Online Assessment
70 questions · 8 minutes · mixed typed and multiple choice — difference-of-squares tricks, decimal magnitude, ugly fractions. TradeMind practice target: 55 net on this 70Q / 8-minute configuration — a training setting, not a firm cutoff.
Trick recognitionLooking for a full OA simulation instead?
CTC's OA mixes numerical, spatial, verbal and logic reasoning — a different, broader format from pure arithmetic speed. See Realistic OA Trials.
FAQ
What's the difference between the daily drill and the firm tests below?
The daily drill is short (20 questions, 2 minutes) and generic — everyone gets the same set on a given day, and it rotates the next day. It's for building a habit. The firm tests below (80 in 8, Flow, Maven, SIG) are full-length, closer to a real firm's actual arithmetic-speed screen, and each is one fixed set that never changes — good for a realistic one-off simulation.
Why is the daily set the same for everyone?
Same reason every other test on this site is a fixed set: comparable scores, and it keeps the free web tier a step below the TradeMind app's free tier, which generates a fresh, personalized set every day. Web is the taste; the app is the daily habit tool.
Which firm test should I practice?
If you don't know your target firm yet, 80 in 8 is the classic warm-up. Public reports associate Optiver and Akuna with versions of that format; Flow, Maven, and SIG use variants that can change by region, role, and recruiting cycle. Train the underlying skills, then check your invitation for the current rules.
Is this the same as a firm's full online assessment?
These are pure arithmetic speed drills. If you want a broader, multi-section simulation of a specific firm's full OA format instead (numerical, spatial, verbal and logic reasoning mixed, like CTC's), see Realistic OA Trials.