39 ninety-nine multiplication formula

In order to escape from the seven aunts and eight aunts in the family, Li Ziyu and Zhu Shijing brought their daughters to meet them by chance, so they preferred to return to the academy to continue their studies.

An Xin, who was disturbed and had a bad leisure time, was not in a very good mood: "Why didn't I find that you love learning so much before." ”

"Reading makes me happy, I read, I'm proud, I'm proud!" Jiang Zhou held his head high and said very middle-of-the-road.

Several other people who were frightened by the enthusiasm of the little girl from relatives and friends at home, and came to the academy in advance, also silently nodded in agreement.

An Xin: "April is going to be the government test, everyone work hard, I am optimistic about you!" ”

The six rolled their eyes and ...... to the sky, "We will really thank you."

In the days that followed, the hard reading career of several people continued to set sail.

Every morning with constant running and exercise, An Xin will also let Liu Boxing, who has been martial arts since elementary school, teach everyone to fight boxing to increase their combat effectiveness.

She didn't want a few students she had worked so hard to train to enter the officialdom in case she offended someone and accidentally got clicked again.

For the sake of the comprehensive quality of several of them, An Xin also taught qin, chess, calligraphy and painting very carefully.

Under the careful cultivation of her teacher, who has the blessing of the golden finger, they also learn the six arts of the gentleman, and they are more proficient in what they like.

Li Ziyu loves painting, Leng Xiang Bai Xiqin, Zhu Shijing is good at chess, and Liu Boxing's family has been a military general for several generations, needless to say that he is more talented in riding and shooting.

There is also a strange one among them.

Who would have thought that Jiang Zhou, who used to write a bad hand, insisted on practicing calligraphy with a sandbag hanging his wrist every day for more than a year, and now he can even write a good hand.

Although he is not as good as a senior literati, among the students, his calligraphy is already very good.

An Rui, the youngest of the several, is also the worst learner, and he has no talent for piano, chess, calligraphy, painting, riding and archery, so he finally completely lay down.

I learned a little bit of everything, but I didn't know it well.

*

During this period, Da Zhuang came to report that the village chief Liu of Heshun Village, who was beating and snatching Leng Xiang's white wolf skin robe from his nephew.

It was reported that when the village released water to irrigate seedlings every year, the limited water source was given priority to his family surnamed Liu.

In addition, in order to consolidate his deterrent power in the village, he connived at his nephew to run rampant in the village and injured the villagers many times.

It has been verified by the people sent by the government and removed from the position of village head, and now the man surnamed Wu who became his fiancΓ©e is the village head of Heshun Village.

Now those people surnamed Liu, who have been showing off their power in the village for a long time, do not have the protection of Village Chief Liu, and those who know some personnel have begun to clamp their tails and behave as people.

"What happened to Brother Leng Bai's sister-in-law's house, as well as his sister-in-law's family?"

Da Zhuang: "Master, Leng Xuexue's sister-in-law's mother's family, she can't recognize the reality, and now she has been targeted by the whole village, and the family is also a mess." ”

"I used to rely on my cousin to be the village chief's sister-in-law of the Leng family, who was very popular in the village, because she heard someone gossiping about her mother's family behind her back, and she was beaten and injured all over her body.

Brother Leng Xuezi didn't seek justice for her, and he didn't even ask, and the two of them are now in a lot of trouble. ”

A sneer appeared at the corner of An Xin's mouth.

From the last time I saw Leng Xiangbai's eldest brother, I knew that this person had a traitorous personality and was very cold, and he was indifferent to his wife's beating, An Xin was not surprised.

"The wicked have their own wicked grinding, sweep away the tail left over there, and then leave it alone."

"Yes!"

After Da Zhuang left.

An Xin stepped on the incomparably brilliant sunlight sprinkled in the academy, the tip of his nose surrounded by the fragrance of budding flowers, and the comfortable breeze blew the broken hair on his forehead.

Looking at the new vitality of everything in front of him, An Xin suddenly realized that March is the best time to go green.

So he made a decision, turned around and went back to tell Mingyue, and walked to the front yard again.

An Xin walked into the church hall with lazy steps, and saw a few people lying lazily on the table and sleeping.

Picking up the ring ruler on the table, "Knock knock," he knocked twice to give them a pick-me-up.

The six people who were awakened by the magic sound raised their heads and looked at An Xin who was standing on the podium holding a ring ruler.

"Cousin, you're going to scare the baby like this."

An Xin smiled slightly, "Oh, in order to take care of your little hearts, I will knock less next time." ”

The six people who dare to be angry and dare not speak "......" we will really thank you.

When they all came to their senses, An Xin began to lecture: "Yesterday, I explained to you the annotations and explanations of the Four Books and Five Classics by the Confucian sages of the past dynasties. ”

"I'm going to start teaching you arithmetic today."

For An Xin, who has gone through nine years of compulsory education in modern times, and has passed the cruel college entrance examination and entered the university, she still teaches arithmetic very easily.

For the most basic arithmetic addition and subtraction in this era, even if a few people are stupid, they have learned it in the academy over the years.

Especially Zhu Shijing, who has been managing the store for his father since he was a child, is even more proficient in this course.

However, he was still attracted by the Arabic numerals of Anxin and the ninety-nine multiplication formula, from being at a loss at the beginning to being attracted later.

"Why is ninety-nine equal to eighty-one?" After Liu Boxing listened to the multiplication formula, there seemed to be two pieces of mosquito coils spinning in front of him, why is ninety-nine eighty-one, can't it be eighty-two or eighty-three.

An Xin choked when asked.

The others looked at her gloatingly.

An Xin saw her pull her purse from her waist and pour out a hundred beans from it.

I thought it was good that she was prepared, or she would have been really asked by these stinky boys.

She asked Liu Boxing to come up.

"You count eighty-one beans out of this pile and divide them into nine equal parts, and then you will understand why ninety-nine equals eighty-one."

An Xin said to the others: "If you don't understand, come up and stand by and watch." ”

"I won't," An Rui ran up first, and he was also confused by the number An Xin said.

One after another, several people came up to look at Liu Boxing and count the beans.

An Xin sat leisurely on the side, watching their eyes light up after they gradually understood.

Liu Boxing shouted in surprise: "I understand, eighty-one beans, divided into nine small piles equally, a pile of nine, and there is nothing wrong with ninety-nine eighty-one." ”

"So that's the case," Zhu Shijing's eyes lit up amazingly after understanding such an algorithm.

As he said the multiplication formula, he multiplied the number of beans by the number of heaps, and soon got all the answers, "I see, wonderful!" ”

In Zhu Shijing's continuous transformation of the number of beans and the number of piles, even An Rui understood the principle of the multiplication formula.

The other brains were smart and nimble, and they understood a little after Liu Boxing finished counting.

After that, several people obviously had a strong interest in An Xin's new mathematical algorithm, and An Xin gradually taught them mathematics in depth.

When class was about to end, An Xin said to the six people: "The weather is good these days, so I will have a day off tomorrow." ”

"The Great Devil...... How could you find out in your conscience that you are willing to give us a day off to rest, I don't have auditory hallucinations, right?! Jiang Zhou suddenly felt a chill on his shoulders and back, and changed his name abruptly.