Teacher Wang sighed: "Liu Quan, in order to verify whether the answer is right or wrong. Let's do this. Tell us the answer to your calculation."
Liu Quan wiped his sweat, picked up a pen and busily performed calculations on the white paper, including various vertical expressions and formulas.
About two minutes later, Liu Quan said weakly: "X=10. But I calculated the answer myself. There must be something wrong with Li Zhen's answer. He must have known the answer in advance. How could he solve such a difficult question in an instant? Figure it out.”
Li Zhen sighed, and finally explained helplessly: "It's not that the question is difficult, it's that the person is stupid."
"You... you scolded me."
"Is it really surprising that you can do a mental calculation for a question at the elementary school level in an instant?"
Li Zhen shook his head and said with emotion: "Mathematics shouldn't be so complicated. The core is to find complex answers in a simple way. But you make the question too difficult. Just a score makes you embarrassed. Write vertical expressions on paper and keep counting the results with your fingers. But in fact, if you change your way of thinking and solve the problem, you can answer it in seconds."
Teacher Wang looked at Li Zhen curiously: "How did you figure it out?"
Li Zhen said expressionlessly: "8.5+65% We know the answer is 15 minus 8.5 = 6.5. We know that the number before
“…”
The whole place was silent. Everyone looked at each other. Even the math teachers looked at each other in astonishment.
Is it that simple
Liu Quan was a little distracted: "Ah, yes, 65%, which can be converted into 0.65..."
The students all took a deep breath. This is considered to be something they have learned. How can they still do such a simple calculation
"What is his brain made of?"
"With this explanation, it feels so simple."
"Isn't that awesome? This is definitely not cheating."
"It doesn't look like that."
“…”
Li Zhen didn't have any trouble in his heart. He put the hundred coins into his pocket and said to Liu Quan with a smile: "In order to fulfill your wish, I decided to give you a formula."
Liu Quan widened his eyes and asked, "What formula?"
"It's the formula you were all curious about just now. How did I solve the math problem on the test paper?"
"Say it."
“…”
Everyone pricked up their ears and were very curious about the question Li Zhen just asked.
Li Zhen smiled lightly and said: "That question is about the multiplication and division of fractions. Logically speaking, the operation is very complicated and difficult. But there is a method that can make the addition, subtraction, multiplication and division of all fractions simple and easy to understand. .”
"That method is called the 'fractional split term method'."
After the words fell, Liu Quan grabbed the test paper in a panic, looked carefully at the calculation formula left on the test paper when Li Zhen solved the problem, and said in a trembling voice: "What is the fractional split term method?"
Teacher Wang and other mathematics teachers also gathered around and looked at Li Zhen excitedly: "Tell me, what is the split item method?"
"I have never heard of such a method. What is the splitting method?"
"Is the split-term method what you rely on? Is it the split-term method that makes you write test papers so fast and has 100% accuracy in answers?"
"Speak quickly and stop being so pretentious."
“…”
The school leaders also gathered around and looked at Li Zhen attentively. This guy was so full of witty words that every word he said casually made people's hearts tremble.
Li Zhen said calmly:
"There is a very interesting phenomenon in fractions. If the numerator of the fraction is the natural number 1 and the denominator is the product of two adjacent natural numbers, the fraction can be written as the difference of two fractions. The numerators of the two fractions are still The natural number 1, the denominators are two adjacent natural numbers.
In fractions, you can use this method to simplify seemingly complex calculations. It is clear at a glance and the answer can be calculated mentally in an instant.
This is called the split item method! "
“…”
After listening to what Li Zhen said, most of the classmates were confused and did not understand what he was talking about.
However, some students who were good at studying began to calculate on the paper with doubts on their faces. Liu Quan also picked up a pen and paper, asked himself a question, and then started to perform calculations using the split-term method mentioned by Li Zhen.
Not only the students who were good at studying, but also the school leaders and math teachers began to perform calculations silently.
'sssssssss'
No one spoke in the room, only the sound of pen and paper scraping together.
Five minutes later, Liu Quan put down his pen, stood up and bowed to Li Zhen:
"I was wrong."
'Wow'
The classmates who didn't know the truth looked around at a loss. Liu Quan, whose family was extremely wealthy and arrogant, actually bowed and apologized to Li Zhen in public
What's happening here
After a while, Teacher Wang slumped down on the chair, unable to do anything, and kept wiping the cold sweat from his forehead: "Monster!"
"You are a monster!"
"Mathematics, how can you still play like this?"
"The splitting method... is this the splitting method?"
"Amazing!"
With a 'buzz', the scene exploded instantly.
The students who studied well also tried this new term - the split item method.
Everyone felt creepy, and everyone felt chilly all over. Looking at Li Zhen, he looked like a demon.
"How could he do this? Is this a method he invented?"
"The addition, subtraction, multiplication and division of fractions are very difficult to calculate. Just the various conversions of denominators and numerators are a headache. How could he invent such a way to perform calculations?"
"The split-term method is exactly as its name suggests. It is a method of splitting each item and calculating it one by one. The split-term method."
"This is simply a mathematical genius. In the history of the Kyushu Empire, no one has ever proposed such a calculation method."
"He has always been pretending to be a pig and eating the tiger. He has never shown off his integrity. It turns out that knowledge is so powerful."
"This Li Zhen is not only rich in knowledge, but the scary thing is that he can actually invent new calculation rules?"
“…”
Everyone felt frightened. Looking at the ragged and thin man, they felt that he was extremely tall at this time.
Splitting method!
Teacher Wang trembled his beard and said: "This... this great calculation method, how did you know about it? Who did you learn it from? Did you create it yourself?"
Li Zhen smiled but said nothing, didn't answer, and said nothing.
I sighed silently in my heart. This is primary school mathematics from 10,000 years ago. In fact, mathematics in my subject is not good. Compared to...
In the 10,000th year of the New Calendar, are there so many gaps in basic disciplines
He felt a little sad for the world.
But at the same time, I feel that the burden on my shoulders is getting heavier and heavier. Maybe I have an obligation to spread the knowledge I crazily absorbed there, the basic subjects ten thousand years ago, to this barren world today...
The chemistry teacher also took this opportunity to ask:
"I would like to ask Mr. Li. There is a question on the test paper about how to obtain oxygen. In the field we know, there are no more than two ways to obtain oxygen. The first is electrolysis of water, and the second is heating with potassium permanganate. ... And you, what does the formula you left behind mean? Looking at a incomplete periodic table of elements left in ancient times, if I remember correctly, this formula should be the formula for extracting sodium acetate, right? What does it have with oxygen? relation?"
Li Zhen asked back: "If I remember correctly, is this question asked like this: How to extract oxygen faster and more conveniently?"
"Yes. That's the question. This question is mainly about rapid oxygen production and is a bit of a brain teaser. Because among the two known heating methods of electrolyzed water and potassium permanganate, heating has a higher temperature. Potassium permanganate can obviously obtain oxygen faster. Heating potassium permanganate and filtering the water can... "
The chemistry teacher kept talking, and Li Zhen interrupted:
"In addition, there is a third way to produce oxygen faster. To adapt to the question type, it is mainly fast and convenient, so... 2Na2O2+2CO2=2Na2CO3+O2."
The chemistry teacher asked in surprise: "What does this mean?"
"Sodium peroxide and carbon dioxide react with each other to not only generate sodium carbonate, but also oxygen. Because carbon dioxide is a common greenhouse gas, only sodium peroxide is needed. In other words, when sodium peroxide meets room temperature gas, it does not require It can produce oxygen with any operation. It is faster and more convenient. Because the two react to generate oxygen, you can carry it with you at any time... Adapt to the question type. Electrolyze water to produce oxygen. Can you wear the device at any time? Permanganate For potassium reactions, can I bring a beaker, water, and potassium permanganate test tube with me at any time?"
"cannot."
"So, it is more convenient and faster to produce oxygen. So it is equal to: 2Na2O2+2CO2=2Na2CO3+O2."
“…”
Li Zhen's voice was heard echoing in the auditorium. All the teachers were collectively petrified, and all the students looked at him like a god.
Holding their breath, no one dared to make a sound for a long time.
After a while, a chemistry teacher took sodium peroxide, exposed it to the air and observed it.
Someone exclaimed: "Oxygen is really generated!"
"Oh, my God, it really does."
"In the past, we only knew that sodium peroxide meets carbon dioxide and generates sodium carbonate. Many people extract sodium carbonate in this way. Why has no one discovered that this formula can also generate oxygen?"
"How did he discover this method?"
"Ah, there are three ways to prepare oxygen!"
"No one has discovered it for so many years, but he discovered it. The chemistry textbook only has: 2Na2O2+2CO2=2Na2CO3. And Li Zhen discovered it. Adding the two, the answer is also +O2."
"So attentive."
“…”
Immediately afterwards, the physics teacher couldn't wait to raise his doubts.
Li Zhen once again took the trouble to give the answer, and it was verified that it was indeed the case.
In the entire auditorium, there were school leaders, teachers, and students. Everyone was shocked.
They had just guessed that Li Zhen might be a top student, but today they discovered that Li Zhen had already subverted everyone's perceptions without even knowing it.
Where did he learn all this knowledge
In the 10,000 years of the New Calendar, he knows all the concepts that have never been proposed by anyone in the history of the world.
Invariably, all the teachers and students felt chills in their hearts. They looked at Li Zhen and could only think of one word to describe him - wisdom that is almost demonic.
(End of chapter)