In Mr. Wu's office, a woman in a red dress is standing by the window, holding a cup of fragrant tea in her hand, her figure is like smoke, and her temperament is good, she is Xu Jiaojiao, the most famous math teacher among the young generation of Xiangyang Primary School.

Teacher Wu took Sun Mohan to the office, and in order to prove his status as Teacher Wu, Teacher Wu coughed lightly, which was regarded as a reminder to Xu Jiaojiao.

Xu Jiaojiao turned around, it was indeed quite beautiful, she winked at Sun Mohan, and then smiled: "You are Sun Mohan, you look so cute." ”

Sun Mohan took the opportunity to buy a cute one and said: "Teacher Xu, you are so beautiful, you are the most beautiful math teacher I have ever seen." ”

"Hee-hee, it's really smart, I like this kid. ”

"Cute opinion from Xu Jiaojiao +94"

"The teacher asked, is this test paper really completed by yourself?" Xu Jiaojiao asked with the math test paper completed by Sun Mohan.

Sun Mohan nodded, and Xu Jiaojiao asked again, "How much time did it take?"

Sun Mohan said: "About half an hour." ”

Xu Jiaojiao's eyes widened again, and she didn't believe it, even if the test paper was really completed by him independently, even if his mathematical thinking was not good, even if he might not be able to complete the test paper within half an hour.

Teacher Wu said on the side: "Don't ask, don't you want to personally identify the strength of my students, hurry up and solve the questions." ”

Xu Jiaojiao glanced at Teacher Wu and said, "Why are you in a hurry, my student hasn't arrived yet, and when she comes, I'll ask the question." ”

Teacher Wu and Sun Mohan were stunned for a moment, and Teacher Wu asked, "You won't call Zheng Huanxi over, will you?"

As soon as Sun Mohan heard this name, he couldn't help but feel a little depressed, why is she everywhere.

Xu Jiaojiao said: "Isn't it okay?Wu Linli, let me tell you clearly, I don't believe that my students are worse than your students, the reason why she answered a question wrong in the previous test paper was completely careless, that is not her real level." ”

"Isn't Sun Mohan also going to participate in this Xueersi Cup Olympiad Competition, just right, let's let them compete two to one first, I want to see if your student is great, or my student is great, if you lose, he will take care of the housework this month." ”

Teacher Wu was silent for a moment, and then said firmly: "This is what you said, don't regret it." ”

Xu Jiaojiao snorted: "I will never regret it." ”

Holy, is this teasing me?

Teacher Wu said again: "Sun Mohan likes to eat braised pork, if you lose, give Sun Mohan a month's braised pork, I bring it to school every day, do you dare?"

Xu Jiaojiao said directly: "Zheng Binxi likes to eat crayfish, if you lose, you will make Zheng Binxi a crayfish for a month, I bring it to her every day, do you dare?"

"It's a deal! Lose the food bill!" The two looked at each other, then turned their backs, and no one paid any attention to the other.

Sure enough, it's the best couple in the legend, it's kind of interesting!

Although Sun Mohan doesn't like this kind of contest with stakes very much, he can't back down because of Mr. Wu's efforts to fight for him braised pork.

A few minutes later, Zheng Huanxi came to the office, and after she saw Sun Mohan for the first time, her eyes widened, and then she silently sat at a desk far away from Sun Mohan.

Xu Jiaojiao walked up to Zheng Hanxi and whispered a few words, Zheng Binxi nodded silently, and then glanced at Sun Mohan with a strange expression.

After a while, Xu Jiaojiao brought a small blackboard, leaned against the wall, and said, "You two prepare a pen and paper, and I'll start to solve the question." ”

"Slow!" Teacher Wu said suddenly: "For the sake of fairness, you and I each have a question, who knows if your question has been given to Zheng Huanxi before." ”

Teacher Xu Jiaojiao held the chalk in her hand, broke off the head of the chalk and threw it at Teacher Wu and said, "I...... How could I fall in love with such a cautious man as you in the first place, you have to have it, each person will have a question, and each person will have a question, I'll come first. ”

After Ms. Xu Jiaojiao finished speaking, she began to write the small blackboard, her habits were very similar to Ms. Wu, she didn't need to read the notes at all, she wrote them all in her head, brushed and brushed, and soon wrote down a question.

"A and B two cars at the same time from A, B two places opposite each other, after 8 hours of meeting, car A continues to drive forward, to B will take 4 hours, it is known, A is 35 kilometers faster than B per hour, how many kilometers of highway between A and B?"

The application questions in this kind of math problem have always been the most headache for many students, and the main consideration is the student's mathematical thinking, of course, this kind of question is also the best question type that can test a student's mathematical ability.

Zheng Binxi has indeed never seen this question, but she has done a lot of similar question types, and the difficulty coefficient of this question in her mind is medium to upper.

She took out a pen and paper, carefully calculated on the paper several times, and it took about three or four minutes to list the drafts of one-third of the paper, and completely solved the problem.

Xu Jiaojiao and Wu Linli looked at the scratch paper, their expressions were different, Xu Jiaojiao was of course full of pride, although the difficulty coefficient of this question is not the largest, but it is often difficult for many students with good math scores to solve it.

Wu Linli glanced at Sun Mohan, this kid was staring out the window blankly, and the scratch paper he gave him was blank, Wu Linli couldn't help but say: "Sun Mohan, it's time to show your true strength!"

Sun Mohan still looked out the window, there was no response, Zheng Huanxi glanced at it slightly, feeling a little proud, although he had long heard that Sun Mohan was a little mathematical prodigy, but Zheng Huanxi really didn't believe that he could solve this problem, because this problem is at least a question type that will only be exposed to in the fourth or fifth grade.

A five-year-old child, although you are good at math, does not mean that you know even the knowledge of mathematics that you have not dabbled in?

Xu Jiaojiao saw that Sun Mohan had not answered the question, so she blinked slightly and said: "Sun Mohan, in fact, this question belongs to the fourth and fifth grades, and it is not strange that you can't answer it, but the Olympiad covers the entire primary school mathematics content, and you still need some knowledge accumulation, forget it." That Wu Linli, you not only have to burn crayfish, but also braised pork, I like these two children. ”

Wu Linli said in a deep voice: "What's the hurry, my students may be doing mental arithmetic." ”

Xu Jiaojiao smiled: "Wu Linli, Wu Linli, excessive self-confidence is conceited." ”

Wu Linli was a little annoyed, because he felt that in front of his wife, he was embarrassed again, in fact, Wu Linli didn't believe that Sun Mohan could mentally calculate this question, although he had already mentally calculated the answer to this question, but after all, it was the experience and accumulation of many years of teaching.

Although he Sun Mohan is smart enough, he is only five years old after all.

However, at this time, Sun Mohan turned around and said lightly: "840 kilometers"