Chapter 19 Mental Arithmetic Ability (Seeking the Pursuit of the Book)
"Hold the grass, it's impossible!"
One person saw Yang Tian's speed, and his jaw was almost dislocated in surprise.
"What's impossible, that kid is already doomed, can't he come back to life?"
A girl who liked Jiang Chen walked over and glanced at Yang Tian with disdain, but it didn't matter if she glanced at it, her eyes were round, and she could stuff an egg in her mouth.
Wang Jingchen was always behind Yang Tian, watching his speed of solving the problem, and smiled softly.
She knew that Yang Tian would not lose.
At this moment, it was class time, and the math teacher arrived at the class to find that everyone was surrounding the two.
One is his proud student, Jiang Chen, the one closest to Su Shirou in mathematics, who has an amazing talent in Olympiad math problems.
There was another one he didn't know, like someone from the outer class.
Seeing that the two of them were struggling to write, they suddenly understood the reason.
This is the atmosphere of the first class of the third year of high school, if any student is not convinced, he will compete to do the test paper, one does not work for two, and only one person will be counted until he loses.
Half of the math teachers in the third year of high school have a very gentle personality and support this atmosphere, but after a glance at the two of them, he knows the result.
Compared with Jiang Chen to do the test paper, or the test paper of the Olympiad questions, the other party has no chance of winning.
As soon as he thought of this, suddenly an exclamation came from Yang Tian's side, "Oh my God, it's done." ”
Su Shirou stepped forward and stared at Yang Tian's test paper carefully for a while, and then knew the result of the competition.
Jiang Chen looked at everyone surrounding Yang Tian, some questioning, some exclaiming, and some disdainful.
But no matter what, the other party has already finished the test paper.
Seeing that the time was approaching, he became even more anxious, he couldn't lose, if he lost, he would have to leave the first class of the third year of high school, which was definitely the biggest shame.
However, when people are more anxious, the more mistakes will be made, Jiang Chen is like this, he is in a greenhouse, he has not experienced a big wave, and he has lost the most important calm.
A math Olympiad problem that was very simple for him, but now he has forgotten the method of solving the problem.
He was so anxious that he scratched his ears and cheeks, on the contrary, Yang Tian had already finished the test paper and began to close his eyes and recuperate.
Ahhh
Finally, a student who was a referee whistled and decided that the hour must have been up.
Jiang Chen angrily smashed the pen and sat down in his chair decadently.
According to the previous agreement, if you don't finish the test paper, you will lose.
He only had one question that he hadn't finished, and it was the one that was supposed to be simple and could have been solved with his fingers.
However, because I lost my composure and forgot all the steps to solve the problem, I left a blank on the test paper!
At this time, everyone felt a little embarrassed, after all, they were inclined to fight Jiang Chen, but now it was Yang Tian who had won.
Yang Tian walked over and saw that Jiang Chen had not finished a question, and he had lost his qualification for the competition, and he said indifferently: "Are you convinced?"
Jiang Chen gritted his teeth and said, "I don't accept it, I didn't lose to you, I just lost to my customized rules." ”
Looking at the stubborn young man, Yang Tian shook his head, the other party was still too young and would not admit defeat in anything.
He laughed and said, "Since you don't accept it, then I'll convince you." ”
Yang Tian put his test paper in front of him and said: "The rules just now are invalid, I will be qualified to continue to compete with me, then the next thing will be to see who has the most points in the questions." ”
When Jiang Chen heard this, he suddenly felt a little incredulous, this was simply for him to win.
Because the other party didn't start writing until half an hour later, he didn't think that the other party would be able to do it all right in such a short time.
Even on the podium, the best math teacher in the entire No. 1 Middle School couldn't.
Jiang Chen estimated his results, and due to the tight time, he could achieve 90% accuracy in doing the questions.
But what he didn't know was that Yang Tian had spent half an hour in vain just now, and he was not doing nothing.
Yang Tian read all the questions in that half an hour and memorized them by heart, so when he started to write, there was no pause!
Jiang Chen took Yang Tian's test paper and was stunned after looking at it.
He said angrily: "Yang Tian, why don't you have the steps to solve the question in this test paper?"
Yang Tian raised his eyelids lightly and asked, "Is it important?"
"You ······" Jiang Chen said angrily: "You don't have a solution step, who knows if you are plagiarizing the answer?"
"Who took out the test paper?" Yang Tian asked indifferently.
"I ·······"
Jiang Chen felt speechless, yes, how could the other party have the answer, this test paper was the one he was most afraid to draw out, it was taken out in his backpack, the other party had no reason to know the answer, there were so many people watching, and it was impossible for the other party to plagiarize.
His face was a little pale, but when he saw that the other party's questions were different from his, Jiang Chen suddenly became happy.
He laughed and said, "You are wrong about these questions, and the correct way to solve them is like mine." ”
As he spoke, he handed his test paper to Yang Tian, but Yang Tian didn't even raise his eyelids.
Jiang Chen was a little angry, this simply didn't take him seriously, he was about to get angry, at this time, the math teacher walked down, took the papers of Jiang Chen and Yang Tian, looked at them carefully, and then said in a deep voice: "Jiang Chen, you did these questions wrong, and the answers he wrote were correct." ”
What's going on?
Everyone was a little incredulous, Jiang Chen was the champion of the provincial high school Olympiad.
And the other party is just a waste transferred from the relationship between the third year of high school and the sixth class nurse, and the two are not comparable at all.
But now, the math teacher actually said that Jiang Chen did something wrong and Yang Tian did it right.
The math teacher took Yang Tian's test paper in his hand and looked at it for a long time, and then asked in surprise: "Classmate, are you really not plagiarizing?"
Wang Jingchen stepped forward and said, "Teacher Li, just now we can all testify that Yang Tian really did not plagiarize. ”
The math teacher was a little surprised, he looked at the last three questions and said: "These last three questions are a little difficult even if I want to solve them, how can Yang Tian write the answers directly without steps?"
Yang Tian thought seriously for a while and said, "Maybe I'm smarter." ”
The math teacher laughed angrily, and he asked, "Then you don't have to solve the problem, how did you solve it?"
The corners of Yang Tian's mouth hooked up and said, "Mental arithmetic!"
"Hubris!" everyone in the senior class was furious.
Mental arithmetic? How is this possible, do you think it is mental arithmetic one plus one equals what is? This is an Olympiad math problem, even if you burn your brain, you don't need to check it with a pen, you can't calculate it at all just by using mental arithmetic.
The math teacher also thought that Yang Tian was lying, and his smile was a little cold: "Yang Tian, since you said that you did mental arithmetic, how about I test your mental arithmetic ability? I don't expect you to answer correctly, as long as you say the approximate number." ”
He put the test paper away and said, "If you can figure it out, I'll judge you win, and if you can't figure it out, I'll judge you for plagiarism, do you think it's fair?" ”
Yang Tian glanced at the math teacher and said, "Very fair." ”
And Jiang Chen wanted to say what to write, but the math teacher waved his hand and stopped him.
"Listen!" the math teacher asked with a smile, "What is 12,345 times 54,321?" ”
I went, everyone almost fell down when they heard this, this math teacher is really ruthless, can such a problem be calculated by heart? Who is crazy about this?
Everyone hurriedly found a pen and paper and checked it.
But before they could list the formulas, they only heard Yang Tian speak
"Equal to 670592745. ”
The math teacher laughed at Yang Tian, he said the question on his front foot, and before other students could write the formula of the question, the other party had already said the answer.
blurted out, without a trace of hesitation, obviously!
The math teacher couldn't help but be a little disappointed in Yang Tian, the other party was really plagiarism, and it was no wonder that he got a full score for the five hundred Olympiad questions just now.
He was a little angry and said, "Okay, I don't think there is any need to continue the test, the winner of the Olympiad is ······."
He had just raised Jiang Chen's hand, but he heard Su Shirou stand up and say, "Yang Tian's answer is right, 12,345 times 54,321 = 670592745."
Su Shirou took out the dense scratch paper that had been written after the calculation was completed and showed it to everyone.
I'll go, a scholar is a scholar.
Everyone had to be convinced, they had just begun to count, and the other party had already finished counting.
The math teacher was stunned, he couldn't believe it was true.
He looked around at the crowd and asked, "Who has a calculator, take it out." ”
Everyone shook their heads.
What are you kidding, this is the first class of high school, all of them are top students, and they don't bother to use calculators at all.
The math teacher was helpless, so he personally calculated it carefully, and it took three minutes!
The final result, indeed, as Su Shirou said, the other party's mental arithmetic turned out to be right.
Everyone looked at Yang Tian with a ghostly expression.
It's not human.
The math teacher was not convinced, and continued to ask: "Okay, I misunderstood you, what is the 11 square of the second question 11!"
I went, everyone almost vomited blood when they heard this, although this question seems simple, but it is very troublesome, because it involves 11 powers, that is to say, it must be counted eleven times to get the answer.
This time, everyone was not optimistic about Yang Tian.
After the math teacher said the problem, they hurriedly buried their heads in the calculations, striving to calculate the problem in the second place after Su Shirou.
The first is that you don't have to think about it, it's Su Shirou's.
The math teacher calculated the problem in three minutes, and she only took thirty seconds!
The glasses man who had compared the chemistry test paper with Yang Tian before looked at Yang Tian and sneered and said to the person next to him: "If he can calculate it by heart, I will eat the table live or not, ······do you believe it?"
Before he finished speaking, he only heard that Yang Tian had already spoken
"Equal to 285311670611."
Poof!
The man with glasses almost choked to death with saliva.
After hearing this, some people dropped their pens and lay on the table and cried bitterly, which was too shocking.
They used to be top students, but since Yang Tian came to the first class of the third year of high school, everything has changed