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Classes of entertaining mathematics for adults to keep yourself in good shape
Lessons of entertaining mathematics are of interest to children and help adults to keep themselves in good shape. But it happens that unexpectedly the simplest is difficult. You go on Facebook and you can’t believe your eyes. Again, thousands of users are breaking spears around rather unpretentious mathematical expressions.
At the same time, the variety of answers is discouraging and at the same time makes you doubt: “How is this so?” So many people just can’t be wrong! We offer you to test yourself, name the correct answer and refresh the forgotten knowledge from old school textbooks.
Seeing the proposed example on the Internet, I, frankly, was surprised. Nearly 7,000 comments on a multi-act problem? What's there to argue about? It's math! Is it something different in Spanish speaking countries?
It would seem simple. But the comments suggest otherwise. On the one hand, I am glad that there are correct answers. So someone has mastered the basics of mathematics. On the other hand, the abundance of incorrect ones is striking. How, for example, can you say that the result could be zero?
So let's get to an example. To begin with, you will have to remember a rule that your math teacher often repeated. First, in the absence of brackets, actions are performed in order from left to right. Secondly, multiplication and division are performed first, and then addition and subtraction. If there are brackets, the first action is performed in them.
According to the hierarchy of operations, here we perform multiplication first, then division from left to right. Continue by adding and subtracting from left to right. Then the division and finally the elevation.
For simplicity, we will deal with the numerator separately. 2 + 2 * 2: 2 - 2 = 2 + 4: 2 - 2 = 2. Then it's really simple: two divided by two gives one. And every degree of one is equal to one. Eventually. correct answer: 1Not 0, 2 or even better 9!
We often resent the fact that school does not teach at all what is useful in real life. Yes, our education system is too outdated and continues to become obsolete every day. But a well-educated person will never get lost in a difficult situation and will be able to find a way out of it.
At the same time, the variety of answers is discouraging and at the same time makes you doubt: “How is this so?” So many people just can’t be wrong! We offer you to test yourself, name the correct answer and refresh the forgotten knowledge from old school textbooks.
Seeing the proposed example on the Internet, I, frankly, was surprised. Nearly 7,000 comments on a multi-act problem? What's there to argue about? It's math! Is it something different in Spanish speaking countries?
It would seem simple. But the comments suggest otherwise. On the one hand, I am glad that there are correct answers. So someone has mastered the basics of mathematics. On the other hand, the abundance of incorrect ones is striking. How, for example, can you say that the result could be zero?
So let's get to an example. To begin with, you will have to remember a rule that your math teacher often repeated. First, in the absence of brackets, actions are performed in order from left to right. Secondly, multiplication and division are performed first, and then addition and subtraction. If there are brackets, the first action is performed in them.
According to the hierarchy of operations, here we perform multiplication first, then division from left to right. Continue by adding and subtracting from left to right. Then the division and finally the elevation.
For simplicity, we will deal with the numerator separately. 2 + 2 * 2: 2 - 2 = 2 + 4: 2 - 2 = 2. Then it's really simple: two divided by two gives one. And every degree of one is equal to one. Eventually. correct answer: 1Not 0, 2 or even better 9!
We often resent the fact that school does not teach at all what is useful in real life. Yes, our education system is too outdated and continues to become obsolete every day. But a well-educated person will never get lost in a difficult situation and will be able to find a way out of it.
I multiply yeast at home, from 1 pack easily make a sea of yeast
A woman who became a grandmother in her 30s shared her feelings about it.