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:
121 points - Jordan
86 points - Anya
86 points - Mia
Medium
Best result:
52 points - Max
44 points - Eldar
28 points - CM
Hard
Best result:
36 points - Jelle
15 points - Mia
13 points - Kevin
Estimation
Best result:
36 points - Kağan
32 points - Consti
28 points - Sondre

Subtraction

Easy
Best result:
396 points - Mert
108 points - Petra
102 points - David
Medium
Best result:
58 points - Eldar
46 points - Max
36 points - CM
Hard
Best result:
48 points - Jelle
34 points - Kevin
17 points - Leon
Estimation
Best result:
21 points - Filip
15 points - Irina
11 points - Sam

Multiplication

Easy
Best result:
278 points - Laura
217 points - Boikanyo
214 points - Bijan
Medium
Best result:
151 points - Max
79 points - shay
72 points - Bogdan
Hard
Best result:
50 points - Phuc
22 points - Jelle
19 points - Francesco
Estimation
Best result:
17 points - Filip
17 points - Tinus
12 points - Irina

Division

Easy
Best result:
1194 points - Laura
494 points - Nils
408 points - Franziska
Medium
Best result:
128 points - Max
46 points - Kevin
45 points - Mia
Hard
Best result:
4 points - Beatrice
3 points - Sondre
3 points - Benjamin
Estimation
Best result:
21 points - Consti
19 points - Liza
19 points - Filip

Percent

Easy
Best result:
466 points - Petra
108 points - Jonas
106 points - Lorenzo Iafigliola
Medium
Best result:
151 points - Mia
85 points - David
74 points - Raphael
Hard
Best result:
139 points - CM
87 points - Raphael
77 points - Pietro
Estimation
Best result:
17 points - Filip
11 points - Irina
10 points - Francisco Gonçalves

Random

Easy
Best result:
322 points - Diego
290 points - Jannik
174 points - Jonathan
Medium
Best result:
198 points - Samrudhi
178 points - Max
156 points - Eldar
Hard
Best result:
22 points - kunal
15 points - Michael
11 points - Anna
Estimation
Best result:
57 points - Samrudhi
15 points - Brett
12 points - Paula
Random - Method and Difficulty
Best Result:
10 points - Bastijn
8 points - Nik Aaron
8 points - Lisafy
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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.