## How it works?

Are you preparing for exams, GMAT, Assessment Centre or you just want to wallop your math teacher? We can teach you how!

86 * 5 =
43 - 19 =
84 / 14 =
0

### How long does it take to an average person?

Calculatoraverage 18 seconds

Pen and paper average 120 seconds

Advanced arithmetician average from 15 to 20 seconds

### There are more ways of performing calculations.

We will show you methods which are great extension of the tradition school approaches

Methods you learn at school

These are absolutely universal but students do not always fully understand the nature of an operation. Therefore, they can make more mistakes and count slowly.

• Usually cannot be solved without a piece of paper or a calculator
• Relatively slow
• No estimation possibility
• Mechanical activity without understanding

#### Invented strategies

Methods suitable for mental computations

They cram traditional algorithms. These methods are based on the numerical operation understanding. These methods are faster and can be effectively solved by hand.

• Mental calculations

• Faster solutions
• Less prone to errors
• Possibility to estimate the result
• Better numerical operation understanding

### How to calculate quickly and by hand?

With Numericum you can learn all mental math tricks for Addition, Subtraction, Multiplication and Division.

Within 16 lessons you will learn how to solve even the seemingly complicated problems quickly.

Easy Moderate Hard Expert
7+9 8+39 35+78 376+964
8*6 8*16 12*37 47*84

### Theory

We use illustrative pictures to explain clearly to you how to solve problems quickly and cleverly

86 * 5 = ?
43 - 19 = ?
84 / 14 = ?

### Exercises

Practice makes perfect!  This holds for math as well. Therefore, we have prepared several interactive exercises that allow you to practise new procedures unless you really master them.

### Measurement and comparison

Throughout the whole course, we measure your improvement.
You can also compare your results with other users.

28 p/m

95 %

79

19 p/m

93 %

68

32 p/m

100 %

99