Get Your Mental Math Skills up to Speed

Learn the case interview basics, practice with 200+ cases, and benefit from extensive test materials, and interactive self-study tools.

Addition

Easy
Best result:
519 points - Petra
506 points - Iliana
236 points - Navruz
Medium
Best result:
43 points - Ethan
36 points - Kien
33 points - DE
Hard
Best result:
32 points - Jelle
17 points - Ethan
17 points - Louise
Estimation
Best result:
57 points - Tomasz
50 points - Duncan
39 points - Lizzie

Subtraction

Easy
Best result:
393 points - Iliana
349 points - Maximilian
150 points - Jonas
Medium
Best result:
33 points - Steffen
30 points - Ethan
28 points - Adri
Hard
Best result:
33 points - Jelle
24 points - Benjamin
24 points - Ethan
Estimation
Best result:
27 points - Lizzie
24 points - Theodor
20 points - Lorenzo

Multiplication

Easy
Best result:
487 points - Selin
400 points - B
381 points - Louise
Medium
Best result:
144 points - Nikki
73 points - YURGEN
62 points - Adri
Hard
Best result:
53 points - Phuc
18 points - Jelle
18 points - Christo
Estimation
Best result:
49 points - Lizzie
23 points - Louise
22 points - Theodor

Division

Easy
Best result:
965 points - Emma
311 points - test
301 points - Mathys
Medium
Best result:
81 points - Ethan
65 points - YURGEN
62 points - Adri
Hard
Best result:
17 points - Phuc
13 points - Philip
9 points - Lara
Estimation
Best result:
58 points - Lizzie
22 points - Lara
20 points - Theodor

Percent

Easy
Best result:
1000 points - Peter
376 points - Leonie
333 points - Anonymous S
Medium
Best result:
180 points - Peter
101 points - Alexandru
84 points - Steffen
Hard
Best result:
200 points - Adri
101 points - Alexandru
72 points - Benjamin
Estimation
Best result:
26 points - Alexandru
20 points - Tristan
19 points - Tri

Random

Easy
Best result:
1111 points - Anna
553 points - Leon
500 points - Marissa
Medium
Best result:
202 points - Samrudhi
127 points - David
121 points - Alex
Hard
Best result:
54 points - Phuc
27 points - David
18 points - Peter
Estimation
Best result:
72 points - Samrudhi
23 points - Howard
17 points - Pedro
Random - Method and Difficulty
Best Result:
17 points - Marissa
16 points - Theodor
13 points - Anonymous S
Do your mental math skills need a little update?
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Practice Your Mental Math Skills for Free

Fast and accurate mental math is a necessary skill for many job interviews and also for your job. Therefore, it’s important to dedicate regular time to training your math skills. Discover more about why strong math abilities are essential in our article on the fundamentals of fast math.

How the Mental Math Tool Works

Choose one of the 24 tests above to assess and improve your math skills for free. You can take a test as many times as you like and track your improvement over time. See how you perform compared to other candidates. The top 3 rankings are recalculated monthly, giving you the chance to climb the leaderboard each month. All other metrics, including your average, the overall user average, and your best results, are cumulative.

Mental Math Practice – Train Your Math Skills for Your Interview

Use our interactive and user-friendly mental math tool to train your interview math skills in all basic operations (e.g., addition, multiplication, percentages). By comparing your performance to the overall PrepLounge community, you can enhance your math skills and ensure you are well-prepared for any calculations during your interview.

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