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:
192 points - Abc
141 points - Abcd
115 points - Josh
Medium
Best Result:
116 points - Abc
96 points - ravi
35 points - Keanu
Hard
Best Result:
63 points - Abc
43 points - Jelle
21 points - Alex
Estimation
Best Result:
88 points - Abc
33 points - Matteo
30 points - Chimchetaram

Subtraction

Easy
Best Result:
619 points - Petra
147 points - Max
146 points - Max
Medium
Best Result:
30 points - Keanu
28 points - Alex
28 points - Marc
Hard
Best Result:
40 points - Jelle
18 points - Matt
18 points - Vincent
Estimation
Best Result:
27 points - Matteo
26 points - Vincent
20 points - Manuel

Multiplication

Easy
Best Result:
3007 points - Josh
1284 points - Matteo
1240 points - Vinod Krishnan
Medium
Best Result:
197 points - Atos
59 points - Ethan
51 points - Matteo
Hard
Best Result:
89 points - Phuc
19 points - Jelle
14 points - YJ
Estimation
Best Result:
92 points - Nargiz
40 points - Josh
27 points - Vincent

Division

Easy
Best Result:
2535 points - Vinod Krishnan
631 points - Alex
556 points - Josh
Medium
Best Result:
79 points - Vinod Krishnan
61 points - Saksa
58 points - Vincent
Hard
Best Result:
11 points - Phuc
7 points - Matteo
7 points - Vincent
Estimation
Best Result:
29 points - Vincent
22 points - Matteo
18 points - Saikat

Percent

Easy
Best Result:
3007 points - Josh
469 points - Joy
226 points - Fredrik
Medium
Best Result:
636 points - Atos
90 points - Josh
69 points - Matteo
Hard
Best Result:
257 points - Josh
156 points - Matteo
152 points - Saksa
Estimation
Best Result:
25 points - Josh
20 points - Matteo
19 points - Nargiz

Random

Easy
Best Result:
1102 points - Petra
600 points - pablo
291 points - David
Medium
Best Result:
538 points - David
98 points - Samrudhi
82 points - Ian
Hard
Best Result:
57 points - Phuc
22 points - pablo
14 points - Kirill
Estimation
Best Result:
70 points - Howard
22 points - Vincent
21 points - Samrudhi
Random - Method and Difficulty
Best Result:
13 points - Brianne
12 points - Josh
10 points - Marc

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.

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