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:
346 points - Iliana
277 points - Petra
232 points - Nikita Zubach
Medium
Best result:
31 points - Antoinette
29 points - Nikita Zubach
29 points - Iliana
Hard
Best result:
36 points - Jelle
16 points - Florian
16 points - Antoinette
Estimation
Best result:
49 points - Duncan
35 points - Andreas
32 points - Christopher

Subtraction

Easy
Best result:
381 points - Iliana
205 points - Marissa
188 points - Stefan
Medium
Best result:
39 points - Theresa
32 points - Florian
31 points - Adri
Hard
Best result:
43 points - Jelle
30 points - Theresa
27 points - Florian
Estimation
Best result:
15 points - Kristian
13 points - Alexandru
11 points - Mahdi

Multiplication

Easy
Best result:
735 points - Tyra
705 points - Achileas
525 points - Theresa
Medium
Best result:
90 points - Adri
74 points - Alexandru
47 points - Florian
Hard
Best result:
56 points - Phuc
24 points - Florian
21 points - Jelle
Estimation
Best result:
41 points - Alexandru
21 points - Steven
20 points - Jim

Division

Easy
Best result:
1671 points - Carolin
820 points - Florian
450 points - Theresa
Medium
Best result:
109 points - Adri
66 points - Alexandru
54 points - Kris
Hard
Best result:
14 points - Florian
6 points - Colin
3 points - Jim
Estimation
Best result:
11 points - MC
8 points - Florian
7 points - Tobias

Percent

Easy
Best result:
287 points - Theresa
286 points - Florian
171 points - Tyra
Medium
Best result:
230 points - Theresa
211 points - Florian
101 points - Alexandru
Hard
Best result:
268 points - Elif
216 points - Adri
192 points - Theresa
Estimation
Best result:
28 points - Lizzie
18 points - Florian
12 points - Phil

Random

Easy
Best result:
1100 points - Anna
311 points - Diana
274 points - David
Medium
Best result:
191 points - Ian
83 points - James
77 points - Jonas
Hard
Best result:
40 points - Phuc
14 points - Giorgio
13 points - Michael
Estimation
Best result:
18 points - Brett
15 points - MC
10 points - Florian
Random - Method and Difficulty
Best Result:
14 points - Jonas
6 points - Helena
6 points - Aryan
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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