"Chickens and rabbits in the same cage" is difficult to count how many primary school students, there is no way to count the specific number, but now, there are four children who have obviously been hit.

The simplest addition, subtraction, multiplication and division four operations is the enlightenment that Ah Yuan did, and even added to the setting of "unknowns" to solve the problem, but suddenly replaced with two animals with different numbers of feet, but put them in the same cage, then it would have to turn a few corners.

"But mother, why don't you prepare more cages and separate them?" Xiao Zhantang frowned and showed that he didn't understand: "Isn't that a rabbit and a chicken going to fight?" ”

"Yes, yes, mother, rabbits and chickens eat different food, in a cage, how to feed?" Song Hao was worried about other problems.

This kind of math problem really goes against common sense, as if it is specially designed for difficult talents, Ah Yuan casually explained: "The conditions at home are not good, just this one cage, a trough on the left and right, and the food poured is different, isn't it?" ”

Song Zheng'er's "smartness" was committed, and he slapped it and proposed: "Mother, whose family is still so poor?" Is it in our Zhuyang County? That's not going to work! Wouldn't I be able to buy enough cages by giving some of the dividends from my toy store to this family? ”

The good girl nodded her head sharply: "I also have dividends in the 'Beauty Place', let's use some for the family too, and why do you want to put the rabbit in a cage?" I have a small wooden bed in my house that I can give to a rabbit to settle down ......".

How can children have so many strange problems? In the blink of an eye, they could be taken to the "ditch", Ah Yuan covered his mouth tightly and couldn't talk, and hurriedly walked out of the study.

Open the door. Back. Leave a sentence with a straight face: "If you find the answer." You can go to compete with the Zhan guards, and my mother is allowed to use such a question. ”

She closed the door tightly, her face relaxed. There was an excited conversation from the little ones in the study: "We all find it difficult, Master Zhan will definitely not find the answer, and then you can slap him hard!" ”

"Yes, yes! That's a great idea! So let's find the answer, shall we? Be sure to defeat Master Zhan! ”

……

Unexpectedly, Zhanzhao's arrival would also have an academic promotion effect, Ah Yuan smiled at the maid who came to deliver hot milk: "Don't disturb their train of thought first, wait for the temperature to be just right, and then send it in." The overseer came out as soon as he finished drinking. ”

It's about giving children a space to think for themselves!

It seems that only Xiao Zhanpeng didn't let his mind fly, his little hands were gesturing on the paper, and he even drew the outline of a chicken and a rabbit......

With the premise of wanting to compete with Master Zhan, there is no need for supervision and encouragement, according to the maid's report, if the little masters were not afraid of Ah Yuan's "obscenity", then they would not even let them in the study door, and they all got together to discuss the problem of "chickens and rabbits"!

Is this also knowledge? When I was taking the imperial examination, I had never heard of an animal test......

Ah Yuan's heart was also itching. There was nothing to do left and right, and I quietly walked out of the window of the study and listened carefully.

Seem. The four "stinkers" couldn't catch up with one "Zhuge Liang", and the tone in the study was obviously angry.

"Mother, this is especially difficult for us! How do you divide the twenty legs? The two-legged ones and the four-legged animals are put together, isn't that a mess for us! ”

"Saw it down! Cut the rabbit's four legs into two, and you won't have to worry about it! "I didn't find out, our little county lord Song Haohao, there is still a violent tendency in his bones? Just now, I was going to donate money and a small bed, and now I picked up the "butcher's knife"?

It seems that Xiao Zhantang was the first to express his objection: "Sister, how can you hurt the little creature in the question in order to find the answer?" We feel that the extra two legs are in the way, so we can pick them up and wrap them around the rope, regardless of their ......."

"I see!" An ecstatic scream, seemingly coming from Xiao Zhanpeng's throat, the sparse sound of a piece of paper and charcoal in the study.

"Eight animals, entangled the rabbit's two front legs, whatever they are, how many legs are left?" Zhan Peng should explain to his younger siblings and older brother while making a gesture.

"Sixteen ......".

"That's right! So how many front legs did we wrap up? ”

"Yes - twenty minus sixteen - four front legs ......"?

Isn't it clear how many four-legged rabbits there are? The children began to boil: "Is it so simple? Giggle – Zhan Peng is awesome! ”

"Hehe-hey-it's your idea--help me think of ......", Zhan Peng is quite modest.

"Then let's go and tell my mother! Let her be happy and happy-", Song Hao was the first to this, and the foot girl was also the first to poke out of the study.

What about mothers? Naturally, he stood outside the study, touching his nose and smiling like a flower!

"Mother-mother-we know! There are two rabbits and six chickens! Four smiling faces crowded at the door of the study, proud and excited.

"Well, your answer is correct, we will have lunch at noon today, and the next time there will be a holiday in the school, I will take you outside to ......." As soon as Ah Yuan's promise came out, the little baby was even more excited.

However, only this question is really not enough, especially Song Zheng'er, who feels that the solution of this problem has no credit for herself, so she is eager for the next opportunity.

"Mother, let's make another one! This - hey - a little easier......".

Song Haohao almost gave him a pair of white eyes in vain, since it was easy, why didn't your brother find the answer in advance?

However, now that I am full of energy, I am looking forward to one more interesting topic like this.

Ah Yuan doesn't dare to release the "administrator" of "releasing water" now, in case it really hits the enthusiasm of the children, it will not be good, we have to take it step by step and lure the enemy deeper, right?

"This morning, my mother will come up with this problem, if you haven't played enough, then find a few more calculations, and ah, don't you want to use the question to stump the guards? Then don't use such a simple question, figure it out for yourself, make a difficult one, and defeat the Zhan Guard! ”

Yes, how did you forget the original purpose? My four "little prodigies" have been pondering for so long together, so Zhanzhao, will he say the answer at once, so that the people who ask us can't get off the stage?

The four little babies threw themselves back on the table again, racking their brains to figure out this problem, and they had to change the way, the same problem, and there were many solutions to come up, so it was also a win, right?

Xiao Zhanpeng is very sensitive to digital things, and even uses a series of calculations to solve the problem of "unknowns" on the table: if there are X chickens in the cage, there are 8-X rabbits

2X+4×（8-X）＝20

→2X+32-4X＝20

→2X＝12

→X＝6

8-6＝2

There are 6 chickens and 2 rabbits in the cage.

Checking:

6×2+2×4

＝12+8

＝20

This is already a decent test paper model for elementary school students in the previous life, and it is estimated that no matter how big the "Nanxia" exhibition ability is, it will not be able to write such a format.

In the afternoon, the guards and maids in the courtyard of the county lord's mansion and even the cook were thinking about the problem of keeping chickens and rabbits in the same cage, and their heads were about to break.

"Fifty-eight chickens and rabbits, one hundred and forty legs, ask how many chickens and how many rabbits?"

Squatting on the ground to draw rabbits, counting the number of chickens with their fingers, spinning around in circles and stretching out their arms, imagining themselves as four-legged rabbits......

As soon as I got out of the house, I thought that the county lord's mansion had been changed to a "mental sanatorium"!

Zhang Dashan even used his power for personal gain, arranging for the guards in charge of procurement to buy live chickens and rabbits, and also to piggyback on a large cage, otherwise, there would be no way to study the number of more vividly.

The cook is also very excited, because she often comes into contact with these two animals, if the number given in the question is small, less than "ten", she can even give the answer directly with her fingers, although she can't make sense, let alone understand what "unknowns" and "equations" are......

Live chickens are easy to say, and several cages can be found, but the problem is that there are no domestic rabbits at this time, but hares can be found, and most of them are "dead" and can no longer die.

It took a lot of effort to find two alive ones in the bazaar, and they were only panting, either the front legs or the hind legs were strangled by the rope buckles......

This is a baby, the guards and maids of the county lord's mansion are as if they have seen relatives who have been absent for a long time, and "Hulala" surrounded the cage.

Thanks to the purchase of a few more cages, the frightened hens went out of this cage with a pair of fan-like palms, and then entered another cage, and then were watched and pointed out by everyone, and from time to time someone was cheering: "My answer is right!" ”

This was not the most uncomfortable situation for the hens, who couldn't stand enjoying the various cages with a few dead rabbits, and two sick wounded live rabbits with cloth straps wrapped around their legs, and every now and then they had to kick them twice......

It can only be said that I am so lucky to be a guard and maid in the county lord's mansion, and the lucky is simply lawless, at the beginning, Xiao Zhantang liked to read and write, and the big guys all followed to prepare to "say the text and interpret the words", so many years, the county lord's mansion has initially completed the "blindness", and the words on the side of the road can be read.

Later, the little masters all learned to count, and the cultural level of the county lord's mansion was further improved, and the most impressive thing was that the "Ninety-Nine Multiplication Table" could be recited collectively.

Now, are the guards and maids of the county lord's mansion about to make a leap from the accumulation of "quantity" to "quality"? Even the problem of "chickens and rabbits in the same cage" must be "popularized by the whole people"?

When Zhan Zhao Zhan returned to the Happiness Garden, the Lord of Furui was holding his head in the house and sighing, this is just a simple "chicken and rabbit in the same cage" topic, if you start to "release water", is it possible that these guys have to dig out two pools in their yards? (To be continued......)

PS: Thank you Yuki Ge 1972 and Yumemi Hoshino and Ransom for the pink ticket, love you guys!