Only an extraordinary brain will understand what the order of action in the example is correct. Bashny.Net

Mathematics classes Excellent use of the brain, contribute to the development of thinking. Often, to solve a complex problem, you have to be creative, find a non-standard approach. At the same time, the Queen of Sciences teaches to analyze and build logical chains. All this work does not go unnoticed. After all, the acquired skills will be useful not only in school, but also in everyday life.

A good mathematician always has a great memory. He has an excellent abstract mindset. He will always find a way to solve pressing problems. His patience, perseverance and perseverance are on top. All because of one science.

And today's edition. "Site" I encourage readers to do some math again. Surely. model - That's a good warm-up for the mind. What if there are several such examples, and each has its own characteristics? Then it's a whole training, nothing else. At the same time, check how close you are to numbers.



Set an example by action

1. The first example does not seem difficult, but it is quite suitable for warming up. There are all four basic arithmetic operations. Do you know where to start looking for a solution? What action will you perform first?
   
   
   
   
2. In the second task you will have to divide by decimal fraction. Do you remember how to do it, or is it already completely forgotten? Remember, these rules should not be forgotten. Even a middle school student can do it, so you'd better keep up.
   
   
   
   
3. If you remember how to find a square root, that's half the battle. There will be very little work left to find a solution. Quickly deal with the latest example, and then check with our answers in the second part of the article.
   
   
   
   

Tips and answers

1. First we do division and multiplication, and then addition and subtraction. In this case, our example assumes the following form: 4 – 2 ÷ 2 + 2 × 4 = 4 – 1 + 8 = 11.
   
   
   
   
2. Dividing by 0.25 is like multiplying by 4. Dividing by 0.5 is the same as multiplying by 2. Then we get 3 ÷ 0.25 - 3 ÷ 0.5 = 3 × 4 - 3 × 2 = 12 - 6 = 6.
   
   
   
   
3. First you need to extract the square root from the numbers 36 and 16. Almost every student knows that √36 = 6 and √16 = 4. Then our example will become much clearer. After all, 8 ÷ 2(√36 - √16) = 8 ÷ 2(6 - 4) = 8 ÷ 2 × 2 = 4 × 2 = 8.
   
   
   
   

Admit it if you got it right. Share your thoughts and answers in the comments with other readers. Also try to solve mathematical problems. Or find an approach to clever puzzles that can puzzle any adult with a higher education.