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:
501 points - Codo
302 points - Pedro
140 points - Boris
Medium
Best Result:
59 points - Howard
45 points - Pedro
45 points - Jelle
Hard
Best Result:
23 points - Pedro
21 points - Boris
20 points - Patrick
Estimation
Best Result:
82 points - Pedro
67 points - Saša
43 points - Robert

Subtraction

Easy
Best Result:
965 points - Sameer
300 points - Pedro
295 points - Petra
Medium
Best Result:
57 points - Pedro
56 points - Ben
44 points - Boris
Hard
Best Result:
38 points - Howard
36 points - Anubhav
36 points - Pedro
Estimation
Best Result:
31 points - Pedro
30 points - Robert
22 points - Thomas

Multiplication

Easy
Best Result:
1499 points - Sjoerd
632 points - Sasinan
616 points - Robert
Medium
Best Result:
80 points - Matthew
78 points - Fatson
61 points - Boris
Hard
Best Result:
44 points - Phuc
13 points - Anubhav
13 points - Matthew
Estimation
Best Result:
31 points - Pedro
24 points - Diogo
20 points - Tomi

Division

Easy
Best Result:
1516 points - Matthew
1111 points - Boris
1000 points - Pedro
Medium
Best Result:
250 points - Matthew
78 points - Boris
55 points - Pedro
Hard
Best Result:
22 points - Matthew
20 points - Pedro
19 points - Anubhav
Estimation
Best Result:
57 points - Matthew
37 points - Pedro
36 points - Boris

Percent

Easy
Best Result:
888 points - Boris
360 points - Tamara
134 points - Robert
Medium
Best Result:
369 points - Tamara
134 points - Evan
120 points - Rita
Hard
Best Result:
200 points - Tom
149 points - Robert
122 points - Tamara
Estimation
Best Result:
26 points - Pedro
22 points - Robert
16 points - Vitalii

Random

Easy
Best Result:
472 points - Konstantin
357 points - Tamara
287 points - Alex
Medium
Best Result:
344 points - Luciano
145 points - Julian
107 points - Anubhav
Hard
Best Result:
38 points - Luciano
29 points - Anubhav
26 points - Pedro
Estimation
Best Result:
419 points - Matteo
52 points - Ha-Long
22 points - Pedro
Random - Method and Difficulty
Best Result:
10 points - Amit
10 points - Reinout
8 points - Sushma
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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.

Further Math Prep

The "FASTMATH Ace the Case" online course provides a comprehensive set of tools to prepare for the quantitative portion of case interviews. It uses video-based instruction to teach efficient calculation methods in order to improve your speed and efficiency for the most common case calculations (multiplication, division, percentages and compound growth calculations).