Because of inattention, many people make mistakes even in light examples, voice all the pitfalls. Bashny.Net

Not all students want to go. solve. Some work with numbers is boring, and someone does not manage to cope with all these mathematical wisdoms.

As a result, knowledge of the most important school subject remains incomplete and limp on both legs. And even in adulthood, such a person cannot solve the simplest example. And even watching it from the outside is awkward.

So today's editorial office. "Site" He invites readers to test their abilities and solve a couple of simple mathematical problems. Also in the second part of the article will be tips and solutions. And if something goes wrong, you can fill the gaps in your knowledge. And you will always figure out how everything is consistently and correctly solved.



Solving mathematical tasks

1. The first example does not seem too complicated. Although there are brackets that will have to be properly disclosed. Still, we hope that in this case you will figure out exactly which mathematical operations to perform in the first place to get the right answer.
   
   
   
   
2. The second example differs in that instead of addition, you have to divide. However, it is worth remembering the rules that the math teacher liked to repeat. And if you remember, you'll know exactly what the division operation is going to be. First, second or third?
   
   
   
   
3. The last example is solved instantly only by those who did not skip math classes in school. And although there is only addition in the task, but you need to properly deal with degrees. Can you write the correct answer instead of the question mark?
   
   
   
   

Tips and answers to tasks

1. First of all, you need to solve actions in brackets, then multiply, and only at the end perform addition. Therefore, 2 + 5 (8 – 5) = 2 + 5 × 3 = 2 + 15 = 17. As you can see, to solve the example is quite capable of anyone who remembers the school rules.
   
   
   
   
2. In the second example, we also perform actions in brackets first. However, division and multiplication have equal priority, so they are performed from left to right. So 10 ÷ 2 (2 + 3) = 10 ÷ 2 × 5 = 5 × 5 = 25.
3. Here everyone will easily remember that 23 = 2 × 2 × 2 = 8, and 22 = 2 × 2 = 4. But how many people remember that any number equals one to zero? In this case, we get 8 + 4 + 1 = 13.
   
   
   
   

Did you manage to refresh your knowledge of mathematics? If you want to continue, then try to solve our other fascinating examples. And also solve tricky tasks that are far from every educated person are on the teeth.