Two-Week Mental Math Practice Plan
A two-week mental math practice plan for quant interviews, covering baseline checks, daily drills, EV days, Fermi days, and final review.
Candidates with two weeks to improve arithmetic and estimation speed.
Start with a baseline
Spend the first session measuring error rate across fractions, percentages, multiplication, division, EV arithmetic, and one Fermi estimate.
Alternate mechanics and context
Use daily mechanics drills, but every other day put the arithmetic inside probability, expected value, market-making, or estimation prompts.
Concrete schedule
Week one builds accuracy and categories of misses. Week two adds timed sets, Fermi range work, and one mixed mock with immediate review.
Keep an error log
Each day should end with one recurring miss and one repair drill. Without review, two weeks of practice can repeat the same mistake.
Common mistakes
Candidates often cram volume and ignore fatigue. Short daily sessions with review are better than long sessions that train sloppy arithmetic.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.