Mental-Math & Estimation Sprint
The no-calculator arithmetic sprint that opens prop-firm assessments built for Timed mode.
The scenario
This is the gate. Optiver-style firms open with a no-calculator arithmetic blitz dozens of questions against a hard clock because a trader who can't compute fast can't quote fast. Switch on Timed mode, settle your breathing, and hold the pace without losing accuracy.
Where this shows up
A no-calculator speed-arithmetic test famously 80 questions in 8 minutes is the single most common first-round screen at prop and market-making firms. It is pure pace and accuracy under the clock.
Firms such as Optiver, IMC, Akuna.
DeskPrep is not affiliated with, endorsed by, or sponsored by any named firm. Firm names are used for illustrative, educational purposes only and do not imply that these materials are official assessments of, or are connected with, those firms.
The drill
Answer as many as you can, accurately there's no penalty here for skipping, but speed is the point. Flip on Timed mode to feel the real pressure. Give exact answers (decimals where the result isn't a whole number).
Sample question
47 × 23 = ?
Included with the Quant pack
The full graded drill is part of the Quant Research & Quant Trading pack a one-time purchase unlocks every concept, coding guide, interview playbook and take-home in this track.
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