After traveling to ancient times, I became a superb shrew

Chapter 104 Surrounded by wild wolves

As soon as Gu Qing went out, she bumped into Gu Jinhua, the eldest granddaughter of Li Zheng's family. This little girl was holding a piece of paper in her hand, looking like she was thinking.

She supported Gu Qing and asked, "Sister Gu, is Master Dong at home?"

"I'm reading a book." Gu Qing said casually, "What do you want him for?"

Gu Jinhua walked in and walked to the door of Dong Rong's room. The door was ajar. She saw Dong Rong bowing his head and writing.

When Big Brother Dong was studying hard, she didn't dare to disturb her, so she quietly backed out.

Gu Qing glanced at the thing she held in her hand, it was written with traditional numbers, she frowned and asked, "What is this?"

"After the abacus class, Mr. Dong began to teach us "Nine Chapters of Arithmetic". I really didn't understand some questions, so I came to ask." Gu Jinhua folded the paper, "I will ask Dong when the class starts in the evening. Master."

"and many more!"

Gu Qing took the paper from her hand.

The above is a math problem, which should be taken from "Nine Chapters of Arithmetic". This book can be regarded as a master of ancient mathematics, and there are many problems that are closer to reality.

"In a certain county, there are seven large villages and two small villages. One large village plus two small villages can accommodate 680 villagers, and two large villages plus one small village can accommodate 2000, [-] villagers. Ask how many villagers can live in each of the large and small villages. ?”

Gu Jinhua's head was almost scratching her head: "This question is so difficult, I couldn't think of it yesterday even if I thought about it today."

She is already very proficient in abacus now, but she doesn't know where to start with the abacus, and her mind is a mess.

When the two of them were talking here, Dong Rong came out at some point, and he said, "This question is like this..."

He studied for a long time yesterday, found the direction to solve the problem, and the result was correct.

He explained carefully: "Let's assume that all the villagers live in Dacun, then..."

Gu Qing listened to it from the side. It was a very simple one-dimensional equation, and he insisted on using assumptions.

She saw that the confused expression on Gu Jinhua's face became more and more intense, and her hair was scratched and bald.

She sighed, it seemed that she was the only one to come.

"Rong'er, I think there may be an easier way." She said, "Let's change the assumption, assuming that a small village can accommodate x villagers..."

Gu Jinhua asked without shame: "What does x mean?"

"This represents a number we don't know for the time being. A small village is one x, then one thousand 680 minus two x is the number of people that a large village can accommodate." Gu Qing spoke slowly, making it easier for the two of them to understand, "According to the hypothesis, Two thousand and 680 minus two x, plus one x, equals 2000 two hundred and eighty, and then we can figure out how much x is."

She reached for the brush.

This is not good in ancient times. It is not Arabic numerals, but traditional Chinese characters. It takes a long time to write a number. It is impossible to form a first-intuitive number when you see this kind of capitalization. You have to convert it into 2 (1680-2x)+x in your heart. =2280, this is much more intuitive, and the answer can be obtained in an instant.

She smiled: "X is three hundred and six."

There were also multiplication tables in ancient times. Gu Jinhua had already learned the simple multiplication tables. She could do this calculation clearly, but the calculation was very slow.

She went through this process in her mind, her eyes widened, and she couldn't believe it: "Sister Gu, you are too smart, I understand it, I know what to do, it's so simple."

Dong Rong was also full of disbelief: "Patriarch, how did you come up with this method?"

The master of Yunshan Academy has not talked about this subject, but he has read some related books, all of them are using hypothetical method, or using counting chips to arrange and count. Either way, it is very slow, and at least a cup of tea is needed However, with the method of the master, as long as you understand the principle, you can write the answer in a flash when you encounter similar problems in the future.

Gu Qing coughed and said: "Our family does business, and we have to calculate the income and output every day, and gradually we have our own methods."

"Hey, what are you guys talking about? You yelled for a long time and ignored me." Gu Yu leaned over, "No way, why are you talking about arithmetic? When you see it, you get a headache. I'm leaving!"

Gu Yu ran away.

Being grabbed by the collar by Dong Rong: "Yu'er, come here, I'll tell you a way to solve the arithmetic."

Gu Yu wanted to cry but had no tears: "I don't take this in the imperial examination, so I won't study."

"The imperial examinations just don't pay attention to arithmetic. It's not that they don't take the exam. The last question in the test paper every year is arithmetic." Dong Rong dragged her into the study, "Sit down and listen to me to tell you, Jinhua, you also come in, we Reorganize it again and record this problem-solving method.”

Gu Qing smiled and continued to work on the work in hand.

Yang Huai, who had been standing not far away, had an extremely complicated look on his face. On the first day he came to this home, he knew that this home was different from ordinary farmers.

But at this moment, he clearly knew that the biggest reason why this place is different from other villages is because of Sister Gu.

Sister Gu knows how to read and write, is good at arithmetic, and is very gentle, as if she can do everything. She is not like an ordinary peasant woman at all, but like a lady who has gone to school.

I always feel that sister Gu is not a simple person.

Dong Rong brought a few children into the house and continued to teach Jinhua Gu Yu and Gu Nuo. The candlelight shone on their faces, which seemed inexplicably sacred.

Zhu Han and Yang Pei glanced at each other, and silently joined the study team. Although the head of the family did not ask them to take the imperial examination, they should not be too behind. They are both husbands and sons-in-law of the same family. together.

Gu Qing stewed pheasant and hare alone in the new kitchen.

The four wild wolves brought seven or eight prey every morning, stewed four for them, and there was still a small half left for the family, and the family would be able to eat wild game every day, which was a good deal.

The stewed game was placed at the gate of the yard, and in the dead of night, the four wolves would naturally come to the door to drag it away and eat it.

At the end of the hour, the whole family lay in bed and fell asleep.

Gu Qing was dreaming, dreaming about the events of her previous life. She was lying on the soft sofa and swiping her phone, with fresh strawberries and cherries by her hand, each mouthful of sweet fruit, happily playing with her phone and watching TV, with the air conditioner blowing It's cool and whizzing, the small days are leisurely and leisurely...

While dreaming, Lizheng's voice sounded in my ears.

"Miss Gu! Come out quickly! Something happened!"

Madam Gu sat up sleepily, it was pitch black outside, the full moon was shining brightly, judging from the sky, it should be just after midnight.

She yawned and got off the bed and walked out. Li was standing outside her yard with an anxious face on her face: "Gu Hui's family is surrounded by wild wolves. I don't know if it has anything to do with your Xiao Hei. Hurry up and take Xiao Hei for a walk." !"

Gu Qing suddenly woke up from sleepiness.

She lowered her head, Xiao Hei was circling around her, and the little guy's face was also anxious.

She immediately picked up Xiao Hei: "Go, go and have a look."

Dahei followed up wagging his tail.

ps: Thank you book friend AChu for your reward!Add a new chapter today!
(End of this chapter)