Mental Math Practice – Train Your Math Skills for Your Case Interview in Consulting

Use our interactive and user-friendly mental math tool to train your case interview math with respect to all basic operations (e.g. addition, multiplication, percentage). By comparing your performance to the overall PrepLounge community, you can improve your case math skills and make sure that you will be prepared for any calculations in your consulting interview.

Addition

Easy
Best Result:
412 points - Petra
370 points - Luca
273 points - W
Medium
Best Result:
119 points - Pinguin00001
48 points - Mo
38 points - Johan
Hard
Best Result:
79 points - Pinguin00001
52 points - Jelle
47 points - Umay
Estimation
Best Result:
100 points - Bennet
100 points - Matteo
33 points - Milana

Subtraction

Easy
Best Result:
185 points - Petra
151 points - W
144 points - Johan
Medium
Best Result:
62 points - George
46 points - Anshul
44 points - Johan
Hard
Best Result:
44 points - Jelle
32 points - Elif
27 points - Johan
Estimation
Best Result:
19 points - Johan
19 points - Nicolas
18 points - Alex

Multiplication

Easy
Best Result:
2114 points - Caterina
1500 points - Jay
1362 points - Joonas
Medium
Best Result:
163 points - W
92 points - Johan
90 points - Harald
Hard
Best Result:
61 points - Phuc
19 points - Harald
16 points - Sam
Estimation
Best Result:
119 points - Nargiz
27 points - Sabine
23 points - Florian

Division

Easy
Best Result:
3100 points - Sze Ying
1690 points - Caterina
1500 points - Götz
Medium
Best Result:
67 points - Saijun
67 points - Anshul
58 points - Elif
Hard
Best Result:
11 points - Destay
6 points - Den
6 points - Saijun
Estimation
Best Result:
20 points - Johan
18 points - Abinash
17 points - Ha

Percent

Easy
Best Result:
1111 points - Götz
418 points - Carl
287 points - Sabine
Medium
Best Result:
235 points - Jakob
202 points - W
90 points - Nikita
Hard
Best Result:
275 points - Jakob
163 points - Tianyi
148 points - Friedrich
Estimation
Best Result:
39 points - Johan
22 points - Jakob
21 points - Florian

Random

Easy
Best Result:
321 points - Weich
300 points - Johan
233 points - Götz
Medium
Best Result:
112 points - George
106 points - nixon
76 points - Akhil
Hard
Best Result:
59 points - Phuc
26 points - George
17 points - Adil
Estimation
Best Result:
150 points - Matteo
54 points - Ha-Long
20 points - vivian
Random - Method and Difficulty
Best Result:
16 points - Lee
12 points - Helena
11 points - Ha

Practice Your Consulting Mental Math for Free

Fast and accurate mental math is a necessary requirement to pass your job interview at consulting companies like McKinsey, BCG or Bain. Therefore, you should invest regular time in training your case math skills. Find out more about why good math skills are so important for your case interview in our BootCamp article about mental math.

This Is How the Mental Math Tool Works

Choose one of the 24 tests above to check and improve your case math skills for free. You can take a test as many times as you want and see how you improved over time. Check out how you perform compared to other candidates. The top 3 ranking is recalculated monthly which means that you have the opportunity to climb the winners' podium every month. All other values (your average, all users average and your best results) are all-time values.