Although in the Soviet school was enough triples in mathematics, in a minute decided an example with a trick, modern schoolchildren will not be able to do so.

What does a junior high school student do that can’t figure outWhat was given to him as his homework? They may ask for help from their parents or grandparents.

And it is quite strange if these adults and wise people can not help, because all the mathematical wisdom has long been completely out of their minds.

So we're in the editorial office. "Site" Mathematics is a must for everyone at any age. You never know when that valuable knowledge will come in handy. And we suggest in this case to solve a few interesting examples, which for some reason does not work for everyone.



Solving a mathematical example

1. The first example will seem quite simple even to a person who avoided math lessons in school. But there is a small trick that can confuse many adults. And so often in solving such examples, readers make mistakes. Will you be able to avoid such incidents?
   
   
   
   
2. The second example doesn’t seem complicated either. However, almost every third person makes a mistake, which leads to an incorrect final answer. Can you remember some important mathematical rules and solve everything correctly?
   
   
   
   
3. Finally, we offer a more complex example. The numbers here are small, so you can solve everything without the help of a calculator, right in your mind. But in what order to decide everything for the answer to be correct? After all, otherwise, a strict math teacher will be upset that even with such a simple task, the student could not cope.
   
   
   
   

Tips and answers

1. Before proceeding with a solution, you need to remember the inviolable mathematical rules that were repeated many times in mathematics classes. And an exemplary student on the move will say that first we solve actions in brackets, and then actions from left to right. In this case we get 12 ÷ 2 × 6 = 6 × 6 = 36. For many people, the answer is 1.
   
   
   
   
2. In the second example, we first multiply and then subtract. Hence 20 – 10 × 0.5 = 20 – 5 = 15. Although many adults simply perform all arithmetic operations from left to right, resulting in 5 instead of 15.
3. First, as I said, we do things in brackets. Given this, we get 6 × 5 – 2 + 5 × 2 = 30 – 2 + 10 = 38. It is quite simple, if you clearly know the correct algorithm of actions.
   
   
   
   

Even if you managed to solve everything correctly, then do not rush to get conceited. After all, recently we published more complex examples, and also shared trick problems that few people manage to cope with. See if you can do it.