The wonderful secrets of mathematics

Example. 112=121
Note: Now let's count this number, because the number 11 is 2, and 1 is 2. Then we count the score after 2 to 1. When we write the formed numbers sequentially, we get the answer we are looking for. That is 121.
Answer: 121.
Example. 1112=12321
Note: now we will count this number 111, since we have 3 digits 1, 2 and 3. Then, after 3, we count 2 and 1. When we write the formed numbers sequentially, we get the answer we are looking for. That is 12321.
Answer: 12321.
Example. 11112=1234321
Note: now we will count this number 1111, since we have 4 digits 1, 2, 3 and 4. Next, after 4 we count 3, 2 and 1. When we write the formed numbers sequentially, we get the answer we are looking for. That is 1234321.
Answer: 1234321.


Conclusion.
This article describes simple calculation methods. These favorable ways to increase the interest of students in mathematics, developing mathematical thinking, give much better results. Its main task is to educate the younger generation, which can think correctly and independently, apply the knowledge to practice. The same meaning and necessity determine the relevance of this article. Interesting mathematics tightens the mind of a person and helps to solve problems that he faces in everyday life more easily.

The list of used literature:

1. 
   СЕКРЕТЫ МЕНТАЛЬНОЙ МАТЕМАТИКИ.
   
2. 
   “Secrets of mental math” Arthur Benjamin and Michael Shermer
   
3. 
   “Mental Arithmetic Tricks” Andreas Klein
   
4. 
   “Qiziqarli matematika” Y.I. Perelman
   
5. 
   “Mental math tricks” Brilliant Math and Science Wiki
   
6. 
   “Mental math tricks to became a human Calculator”.
   
7. 
   “ 7 practical tips for mental math”
   
8. 
   “ Mental math tricks to do speed Math of pad”
   
9. 
   “easy Math tricks you’ll wish you’d known” Reader’s Digest
   
10. 
    “ Math tricks for you”