Mental Math Error Log
Mental math error log guide for tracking recurring arithmetic mistakes, assigning repair drills, and retesting quant interview calculations.
Candidates who repeat the same mental math mistakes during practice.
Log the mistake type
A useful error log records the calculation, your answer, the correct answer, and the cause. Categories make patterns visible across sessions.
Common categories
Use categories such as fraction conversion, percentage base, multiplication, division, sign, skipped cost, wrong denominator, or attention lapse.
Concrete entry
Example: computed 15 percent of 240 as 24 instead of 36. Category: percent decomposition. Repair: ten drills using 10 percent plus 5 percent.
Retest the repair
After a repair drill, retest the same category a day later. If the mistake repeats, the drill was too easy or the cause was misclassified.
Common mistakes
Candidates often collect errors but do not assign a next action. The log only matters if it changes the next practice block.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.