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:
552 points - Petra
156 points - Justin
130 points - Maximillion
Medium
Best Result:
47 points - Justin
28 points - Yinglun
27 points - Anubhav
Hard
Best Result:
45 points - Jelle
43 points - Patrick
33 points - Qian
Estimation
Best Result:
150 points - Matteo
36 points - Jaret
34 points - Katharina

Subtraction

Easy
Best Result:
411 points - Matteo
317 points - Houdong
264 points - Petra
Medium
Best Result:
59 points - Justin
52 points - Anubhav
45 points - Houdong
Hard
Best Result:
56 points - Jelle
52 points - Qian
30 points - Anubhav
Estimation
Best Result:
100 points - Matteo
40 points - Jaret
24 points - Sophie

Multiplication

Easy
Best Result:
1851 points - Thiago
1666 points - Kerim
1219 points - Shah
Medium
Best Result:
88 points - Justin
86 points - W
63 points - Anshul
Hard
Best Result:
73 points - Phuc
19 points - Jelle
17 points - Yinglun
Estimation
Best Result:
48 points - Jaret
26 points - Sophie
24 points - Helena

Division

Easy
Best Result:
2914 points - Monique
1333 points - Janina
1111 points - Florian
Medium
Best Result:
100 points - Justin
83 points - Anshul
71 points - Dominik Lanter
Hard
Best Result:
19 points - Boris
15 points - Phuc
12 points - Jacky
Estimation
Best Result:
100 points - Matteo
33 points - Sophie
28 points - Jan

Percent

Easy
Best Result:
376 points - Phuong
300 points - Alain
265 points - W
Medium
Best Result:
317 points - Haya
301 points - Justin
163 points - Phuong
Hard
Best Result:
346 points - Boris
207 points - Atos
193 points - Yinglun
Estimation
Best Result:
26 points - Yinglun
23 points - Phuong
22 points - Katharina

Random

Easy
Best Result:
364 points - Boris
209 points - Q
173 points - August
Medium
Best Result:
206 points - Alexandr
135 points - Justin
98 points - Michael
Hard
Best Result:
19 points - Anastasia
13 points - Ryan
13 points - Gabriel
Estimation
Best Result:
239 points - Matteo
63 points - Howard
52 points - Ha-Long
Random - Method and Difficulty
Best Result:
18 points - Matteo
16 points - Ha-Long
15 points - Hendrik

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.