Presets
Optiver 80‑in‑8: 80 questions, 8 minutes, decimals, fractions and negatives, a wrong answer costs a point, skipping is free. The other quant presets are the question types trading firms' arithmetic tests draw on.
Operations
First number
–
Second number
–
Inverse of the addition problems, so answers stay non‑negative.
First number
–
Second number
–
Inverse of the multiplication problems, so it always divides evenly.
Quant extras
PlacesOps
0.7 × 12 · 45.6 + 3.7 · 8.4 ÷ 4
Max denominatorOps
3/4 + 1/8 · 2/3 × 9/4 · 3/8 of 64. Answer as a fraction or a decimal.
Level
15% of 240 · 36 is what % of 240 · 240 + 15%
Up to
−13 + 27 · 12 − (−5) · −7 × 6
n up to
17² · √289 · 12³ · 2¹²
x + 47 = 112 · 6x = 72 · x ÷ 4 = 15. Uses the ranges above.
2, 5, 10, 17, 26, ? — arithmetic, geometric, squares, Fibonacci‑like, second differences.
Mode
Duration
Stop after
problems · 0 = no cap
Problems
Options
Your history with these settings
Score 0
Time 120
3
47 + 89 =
Esc quit
0
Stats
By operation
Missed and slowest problems
Progress with these settings
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