Chen ...... Chen Cong, what nonsense are you talking about? Seeing that this was wrong, Ji Shengnan hurriedly touched his shoulder and reminded in a low voice.

"Seriously, you miscalculated, there was a problem with the order of operations." Chen Cong pointed to the title and said.

This mistake stems from the difficulty of the problem, and both the math teacher and others follow the order of operations given in the original problem, ignoring the precedence problem.

This is like the difference between 2+3*4 and (2+3)*4, the former has to calculate the multiplication sign first and then calculate the plus, and the latter has parentheses to calculate the plus sign first.

And this question is a clever borrowing of this kind of inertial thinking, using a sequence of operations that many people are easy to ignore, and the result is that the answer is very different.

When he explained the analysis of this question in a stunned situation, many people suddenly realized it and reacted immediately.

The math teacher is no exception, he knows that he has made a big mistake, and in the test paper of this exam, there are many uses of this small trap, once the front is wrong, the back will be careless according to the previous calculation method to do the questions, so that many people feel that this math exam is too simple.

"It's over, so I've got three more multiple-choice questions and two big questions wrong." One of the students finally screamed in grief, his face full of sadness, despair of his math performance this time.

"It's sad, it's hard to say whether you can pass or not, these questions are too insidious, teacher, tell us who came up with the questions, we promise not to kill him."

……

The math teacher smiled wryly, and after looking at Chen Cong, who was calm, he was even more shocked in his heart.

In fact, the questions of this monthly exam were selected by the leader of the mathematics teacher group from the question bank, all of which were encrypted questions, which could not be searched on the Internet, and the answers were naturally answered by several mathematics teachers and used as the standard answers for marking.

That is to say, he is not the only one who is wrong in these questions in the mathematics subject of this monthly exam, but the entire group of mathematics teachers in the third grade of high school is wrong.

"Chen Cong, you spoke very well, this time it is indeed the teacher who answered wrong, students, let's talk about these questions again, Chen Cong pointed out the key points, everyone should learn lessons in the future, the easier the topic, the more vigilant." In the end, the math teacher found a step to relieve the embarrassment and started the topic seriously.

After finally finishing the first class, he immediately rushed back to the office and informed all the teachers in the math group of the mistakes pointed out by Chen Cong.

After listening to this, several teachers were shocked, most of them had corrected a lot of papers, and they thought that the results of this monthly exam would generally be very high, but now it seems that the results of this monthly mathematics exam may have to hit a new low.

"Very good, this student is very good, I remember that last semester he also won the first place in the city with a high score of more than 710, right?" The leader of the math teacher group did not feel ashamed to make a mistake, but praised Chen Cong in front of so many teachers in the office.

Yes, there is no shame in making mistakes, only the only thing that is shameful is that they refuse to admit their mistakes, and many people understand the endless truth of learning, and as a teacher, it is impossible to guarantee absolute correctness all the time.

The teachers of the mathematics teacher group gathered together, which naturally attracted the attention of the teachers of other subjects, and when they came over to learn about the situation, their expressions were different.

"That's right, I remember this student, his grades were very good at that time, but his attendance this semester was very bad, and he regressed a lot in the last monthly exam...... Cough. A teacher finally ended his unfinished words with a dry cough, in fact, everyone knew in their hearts that he was referring to Chen Cong's uncle, Chen Yongguo, the director of the Education Bureau.

Many teachers feel sorry for Chen Cong's "waste" this semester, but because he is not Chen Cong's homeroom teacher, and his identity as an uncle, no teacher is willing to meddle in things.

"He has also missed class quite a few times this month, but when this happened, I was a little curious about his results in this monthly exam." A teacher touched his chin, and his eyes lit up and said, "It's better to give priority to a few teachers in a class to correct Chen Cong's papers, and see what his total score will be this time." ”

"Okay, I'm a little curious, too." When the Chinese teacher in the first class heard this, he immediately lowered his head and looked for Chen Cong's test paper.

At this time, a female teacher wearing glasses coughed dryly and said, "Ahem...... Chen Cong's English paper, I finished correcting it last night, how many points do you guess? ”

"How much?" Many teachers cast their eyes on it.

The female teacher smiled bitterly: "The whole answer sheet is perfect, I originally wanted to give a full score, but considering that he has been absent from class a lot recently, I am afraid that he will be proud, so I deducted a few points from which part of his English composition, and now in this situation, do you say I should change it back?" ”

"Change!" Several teachers did not hesitate and said in unison.

……

At the same time, in the classroom of the first class, Chen Cong was already uncomfortable stared at by Ji Shengnan, and since the end of class, this girl has been staring at him like a monster, but she didn't say a word.

Chen Cong finally couldn't help it and asked, "Don't look at it, you are not as handsome as I am." ”

"......" Ji Shengnan rolled his eyes: "Less smelly and beautiful, honestly, you won't be an alien, right?" Not to mention absenteeism, even if you sit in the classroom, you are absent-minded, how can the exam be so powerful? ”

"No way, I'm smart." Chen Cong replied shamelessly.

"Cong, you're big, by the way, you said before that you only had inconsistent answers to five questions, doesn't that mean that you got a perfect score in mathematics this time?" Ji Shengnan suddenly remembered what Chen Cong said before class, and couldn't help but be surprised.

Chen Cong nodded: "Yes, otherwise how can I get the first place in the class?" ”

"......" Ji Shengnan couldn't refute it at all, and he was extremely shocked in his heart, secretly saying that this guy really wanted to take the first place, right? It's terrifying.

……

And Liu Tang, who was sitting in the front row, wanted to cry without tears at the moment, the original brand new test paper was now crumpled by his clenched hands, he hated, hated himself for not finding such a low-level mistake, this mistake was wrong in five questions, and he lost more than 30 points in vain!

"Damn, I don't believe in evil, anyway, math is not my strongest subject, only thirty points, I should be able to pull it back with English and comprehensive subjects, I don't believe that other subjects of this waste can do better than me." He cursed secretly in his heart, extremely desperately hoping that tomorrow would come soon, so that he could use the first rank in the whole class to make Chen Cong embarrassed.

So, at the end of this day, Liu Tang's whole person was absent-minded, and his mind had already drifted to the future tomorrow.

It wasn't until the English class in the afternoon that the English teacher announced a news that completely wiped out Liu Tang's last glimmer of hope.