As soon as the brain begins to brake, I solve a mathematical example to keep myself in good shape all day.

Modern man consumes a lot of information, but quite rarely loads his brain with really difficult tasks. As a result, even basic abilities for analysis and calculation are lost over time. And therefore simpler examples, which ask the child in school, wise life experience parents often cannot decide. So how do we counter that?

Editorial "Site" offers to solve various problems more often and deal with puzzles. It’s also helpful to find solutions, even for simple examples, to keep your brain on edge. Such regular work on yourself will definitely give impressive results. The main thing is to take on increasingly complex tasks every time.



The simplest examples

1. The first example looks pretty simple. It seems that any student can easily cope with it (and this may well be true). But can you give the right answer right away? There's a little trick here. And if you act directly and thoughtlessly, then you will not be able to answer correctly.
   
   
   
   
2. In the second example, there are brackets that can confuse many. However, if you have a good memory of elementary school math, you can’t be fooled here. So the right solution will be found. Just don’t forget to check our tips and answers in the second part of the article.
   
   
   
   
3. The third example is somewhat similar to the previous one. But do not let this relax you, because it is easier to make a mistake, especially when you decide in your mind, without a notebook and a calculator. If you think that everything is too simple, then immediately share your answers in the comments, without checking the hints. Let's see if it's done right.
   
   
   
   

Tips and answers

1. You have to remember one of those rules that a math teacher would often repeat. Namely: first perform division and multiplication, and then addition and subtraction. Therefore, our example takes the following form: 9 – 0 + 1 = 10. The solution turns out to be quite simple.
   
   
   
   
2. In the second example, you need to get rid of the brackets first. And you have to do it right. Then we get 48 ÷ 2 × 12 = 24 × 12. And then you have to think a little bit to multiply the two-digit numbers in your mind. Think 24 × 10 + 24 × 2 = 240 + 48 = 288.
3. And in the last example, we also remove the brackets first: 20 ÷ 2 × 5 = 10 × 5 = 50. Curiously, many people make the mistake of doing multiplication first and then division. Because of this oversight, it turns out 20 ÷ 10 = 2. But that's wrong.
   
   
   
   

We hope you got it right. Don't relax anyway. And from time to time, solve our other more complex problems. Then your brain will always be in good shape, and operations with numbers will not be difficult.