"Jiang Xiaobai, are you done?"

Su Xiaohui was surprised at this time: "In such a short time, you did it blindly, right?" ”

After all, Su Xiaohui was the first place in the school's second-grade group, and she also threw off the second place in the second-grade group by more than 60 points, but Su Xiaohui's score was almost close to a full score, which is very awesome.

Even Su Xiaohui didn't finish her homework, Jiang Xiaobai actually finished her homework in just a few minutes, which is too powerful.

At the same time, Jiang Xiaobai said to Su Xiaohui very proudly: "Oh, sister-in-law, in your eyes, am I so unsmart?" ”

At this time, Su Xiaohui no longer cared about what Jiang Xiaobai called her, she hurriedly took Jiang Xiaobai's exercise book, and then went to check Jiang Xiaobai's homework.

Su Xiaohui checked very seriously, but soon Su Xiaohui was completely stunned, and she looked at Jiang Xiaobai in surprise: "Brother! You? You! You're doing it right! ”

"Ang, what's wrong?"

Jiang Xiaobai hurriedly waved his hand and said with a disdainful expression: "Just this pediatric topic, it's too simple, I can make it with my toes." ”

Although Su Xiaohui was very surprised at this time, Su Xiaohui still couldn't believe that it was Jiang Xiaobai's homework, so Su Xiaohui immediately said to Jiang Xiaobai: "Brother, I'll test you with a few questions." ”

Su Xiaohui asked Jiang Xiaobai seriously: "To transport 29.5 tons of coal, first use a four-ton truck to transport it three times, and the rest use a truck with a load of 2.5 tons. How many more times do you have to transport it to finish? ”

And Jiang Xiaobai didn't think about it at all, and blurted out directly: "It will take seven more times to finish." ”

Su Xiaohui was very surprised that Jiang Xiaobai was right, but at the same time, Su Xiaohui still didn't believe that Jiang Xiaobai suddenly became a genius prodigy: "Brother, why don't you tell me the process?" ”

After listening to what Su Xiaohui said, Jiang Xiaobai showed a very disdainful expression and said, "Cut, such a simple topic can be seen directly at a glance, does it still need a process?" For me, it would be a waste of time to talk about the process. ”

Jiang Xiaobai just didn't want to delay some more time, he was afraid that he would wake up from his dream at any time.

So he had to squeeze out more time, so that he would have more time to be by Su Xiaohui's side, and Jiang Xiaobai was reluctant to wake up from his dream.

"Hehe, brother, do you only know the answer, but don't know the process of doing it, I guess you must have peeked at the answer in advance."

Su Xiaohui also figured out why Jiang Xiaobai finished his homework so quickly, probably because Jiang Xiaobai copied the reference answer in advance, so Jiang Xiaobai finished his homework so quickly, in fact, Jiang Xiaobai had already finished his homework before.

Is Jiang Xiaobai the kind of person who admits defeat and surrenders, of course he can't be embarrassed in front of Su Xiaohui, doesn't he want to lose face, he immediately said the process of this question: "Let's assume that it takes x times to finish, twenty-nine .five minus three times four equals two .5x, and seventeen points five is equal to two .5x, and in the end x is equal to seven, that is, it will take 7 times to finish." ”

After listening to what Jiang Xiaobai said, Su Xiaohui looked at Jiang Xiaobai with wide eyes in surprise: "I'm a good girl, I'm not dreaming." ”17

This is not Su Xiaohui dreaming, but Jiang Xiaobai is dreaming.

"Brother, have you really become a genius?"

Su Xiaohui's eyes revealed joy, and then continued to say to Jiang Xiaobai: "Brother, I'm continuing to test you a few questions, okay?" ”

Jiang Xiaobai stretched out his hand and made a good gesture, indicating that there was no problem at all.

So Su Xiaohui smiled and asked: "The area of a trapezoidal field is ninety square meters, the top bottom is seven meters, the bottom is eleven meters, how high is it?" ”

Jiang Xiaobai did not directly say the answer this time, but first said the process, and then said the answer: "Let's assume that its height is x, and the x parenthesis seven plus eleven is equal to ninety times two, so that eighteen x is equal to one hundred and eighty, and finally x is equal to ten, and its height is 10 meters." ”

Suddenly, Su Xiaohui stretched out a thumbs up to Jiang Xiaobai from the bottom of her heart, and then couldn't help but admire: "Brother, you are a genius." Brother, you're doing well. ”

Next, Su Xiaohui continued to ask: "A workshop plans to produce 5,480 parts in April. It has been produced for nine days, and another nine hundred and eight can complete the production plan, how many are produced per day on average in these nine days? ”

Jiang Xiaobai replied without hesitation: "Let's assume that the average daily production of x in these nine days, nine x plus nine hundred and eight equals five thousand four hundred and eight, and nine x is equal to four thousand five hundred, and finally x is equal to five hundred, and the average daily production in these nine days is five hundred." ”

Su Xiaohui asked quickly: "The two cars A and B are traveling in the same direction from two places that are 272 kilometers apart at the same time, and three hours later, the two cars are still 17 kilometers apart. A travels 45 kilometers per hour, how many kilometers does B travel per hour? ”

Jiang Xiaobai replied quickly: "Let's assume that B travels x kilometers per hour, and three parentheses forty-five plus x parentheses plus seventeen equals two hundred and seventy-two, and we get that three parentheses forty-five plus x equals two hundred and fifty-five, and finally x is equal to forty, and B travels forty kilometers per hour." ”

Su Xiaohui asked quickly: "There are two classes in the sixth grade of a certain school, and the average score of mathematics in the last semester is 85 points. It is known that there are 40 students in class 6 (1) with an average score of 87.1 points, and there are 42 people in class 6 (2), what is the average grade? ”

Jiang Xiaobai replied: "Let's assume that the average score is X points, forty times eighty-seven points plus forty-two x equals eighty-five times eighty-two, and three thousand four hundred and eighty-four plus forty-two x equals six thousand nine hundred and seventy, forty-two x equals three thousand four hundred and eighty-six, x equals eighty-three, and the average score is eighty-three. ”

Su Xiaohui quickly asked: "The school bought ten boxes of chalk, and after using up two hundred and fifty boxes, there are still five hundred and fifty boxes left, how many boxes are there per box on average?" ”

Jiang Xiaobai replied quickly: "First set each box of x, ten x is equal to two hundred and fifty plus five hundred and fifty, and ten x is equal to eight hundred, and finally x is equal to eighty, with an average of eighty boxes per box." ”

Su Xiaohui quickly asked: "There are 200 students in the fourth grade, and during extracurricular activities, 80 girls go to skipping rope. The boys were divided into five groups to play football, how many people were in each group on average? ”

Jiang Xiaobai replied quickly: "Let's set an average of x people in a group, five x plus eighty equals two hundred, and five x equals one hundred and sixty, and finally x equals thirty-two, with an average of thirty-two people in each group." ”

Su Xiaohui quickly asked: "The canteen brought one hundred and fifty kilograms of rice, which is thirty kilograms less than three times the amount of flour transported. How many kilograms of flour did the canteen deliver? ”

Jiang Xiaobai replied quickly: "First set up a canteen to transport x kilograms of flour, three x minus thirty is equal to one hundred and fifty, and three x is equal to one hundred and eighty, and finally x is equal to sixty, and the canteen transports sixty kilograms of flour." ”

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