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:
590 points - Petra
176 points - Navruz
163 points - Bernhard
Medium
Best Result:
31 points - Arthur
25 points - Egor
24 points - Jan
Hard
Best Result:
17 points - Arthur
15 points - Jan
13 points - Robin
Estimation
Best Result:
35 points - Duncan
23 points - Aslan
22 points - Jan

Subtraction

Easy
Best Result:
405 points - Petra
190 points - Marc
146 points - Jan
Medium
Best Result:
32 points - Jan
28 points - Ekin
27 points - Maivand
Hard
Best Result:
29 points - Jan
21 points - Tianyi
18 points - Maivand
Estimation
Best Result:
8 points - Maximilian
6 points - Aliasgar Arsiwalla
1 point - Anna

Multiplication

Easy
Best Result:
300 points - Jan
240 points - Kyrill
203 points - Marion
Medium
Best Result:
103 points - Arthur
80 points - Assem
45 points - Jeremy
Hard
Best Result:
53 points - Phuc
15 points - Jelle
13 points - Harald
Estimation
Best Result:
16 points - Kate
8 points - Santiago
6 points - Anna

Division

Easy
Best Result:
482 points - Maivand
308 points - Jan
225 points - Niclas
Medium
Best Result:
401 points - Lucas Chen
95 points - Assem
33 points - Spencer
Hard
Best Result:
7 points - zeke
5 points - Ekin
4 points - raf
Estimation
Best Result:
6 points - Johannes
6 points - Filippo

Percent

Easy
Best Result:
603 points - Ian
155 points - Jan
97 points - Niclas
Medium
Best Result:
284 points - Ian
226 points - Gonzalo
123 points - Jan
Hard
Best Result:
109 points - Ian
59 points - Julian
58 points - Paul
Estimation
Best Result:
18 points - Marleen
12 points - Lukas
10 points - nanna

Random

Easy
Best Result:
228 points - Ian
161 points - Gonzalo
136 points - AI
Medium
Best Result:
308 points - nixon
76 points - Fuat
60 points - Alex
Hard
Best Result:
55 points - Phuc
16 points - Jonas
13 points - Georg
Estimation
Best Result:
11 points - Mark
10 points - Johannes
7 points - Bedis
Random - Method and Difficulty
Best Result:
14 points - Ivan
8 points - Anna
6 points - Sarah

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 Case Interview Basics 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.