Chapter 189： arithmetic problem

Pei Xiu saw that they were all frowning and counting with their fingers, but Zhou Shan stood aside with an indifferent face.

This child has always been sensible.

"Have you figured it out?" Pei Xiu looked at him and asked with a smile.

He nodded and smiled shyly, revealing his jaws that were missing two front teeth. He immediately realized that he lost his teeth, and immediately put away his smile. Looking at it makes me laugh.

He also knew that it was ugly without two front teeth, and his speech leaked. Now he can't open his mouth if he can.

Pei Xiu thought it was funny, she knew how to pay attention to her image at such a young age.

She beckoned to him, "Come here, write down the number in my hand."

Zhou Shan came forward happily and gestured twice on her palm.

She nodded, "Fine, right! Can't you figure it out?"

They all shook their heads.

Pei Xiu frowned, this is quite simple, anyone who knows addition, subtraction and multiplication should be able to do it.

"Did your master teach you to memorize multiplication formulas?"

"What is the multiplication formula?" They asked in unison.

Pei Xiu got one from one to one, and read to them ninety-nine-eighty-one.

The boss said suspiciously: "Mother, the master said that this is called the nine-nine formula, and the master recited is different from you, he turned to you."

She was at a loss for words, thinking that there was no such thing in ancient times. I've already learned this, why not?

The second child said: "Mother, the master told us to take time to memorize them. We have recently memorized a lot of books, so we didn't memorize them."

Hu Zi nodded desperately, he had memorized the Three Character Classic for a long time before he could memorize it. In the past two days, the master asked him to carry a hundred family names again, and his hair was almost bald.

"Mother, I can memorize it, but I can't use it. The master told us to memorize it, but didn't ask us to do the question. The first question was just written today, and I was dazed." Zhou Xiaosan felt that he was wronged, he always After reading the book several times, he will memorize it, but he will not be able to use these ninety-nine formulas just by memorizing them.

"Then take out the pen and paper, and figure it out for yourself according to the nine-nine formulas. Ask Zhou Shan if you don't understand, and he will." She simply acted as a shopkeeper.

"You memorize the formula. I will give you a question every day to do it. If you do more questions, you will be able to do it. This formula can benefit you all your life."

Regardless of whether they could memorize it or not, they took out the nine-nine formulas they copied in the previous class and thought about how to solve the problem.

As soon as Zhou Cheng came back, he saw such an unexpected scene. Everyone was sitting in the main room, racking their brains with pens and thinking.

He walked towards Pei Xiu, who was standing under the porch, and asked in a low voice, "What happened to them? Are you so serious today?"

Si reduce Si. Pei Xiu opened her black and white almond eyes and said unexpectedly, "They are usually very serious. After dinner, they go back to the house to write and endorse."

"Then why are you sitting in the hall today?"

"They can't do math. Master Zhang doesn't seem to pay much attention to math. I'll help them out with questions."

Zhou Cheng was suddenly curious, "What question did you ask?"

Pei Xiu looked at him with a wicked smile, "Then I will test you too!" She read the question to him just now.

He thought for a while, took a dead branch from the firewood, and gestured and wrote on the ground, and finally wrote a nineteen. Then he raised his eyebrows and looked at her.

She smiled hehely, "It's okay to count."

"Ordinary people are not very good at arithmetic. They can only add and subtract within ten or twenty. It is very difficult for them to exceed this number, but arithmetic is everywhere in life. It is useful to be good at arithmetic." He I have experienced it personally.

She thought so too.

The second child is fine now, and called Pei Xiu.

The couple stepped forward to take a look, the others also took the opportunity to take a look, and the boss also said that he would.

The other two were still looking at them in confusion.

She motioned to the boss to talk about how it was calculated.

"There are nine cages of chicks in total, six in one cage, so a total of six, nine and fifty-four. Three times, a total of five cages, five or sixty-three, and half a cage is three, There are two more, and a total of thirty-five have been bought. The fifty-four that were brought in minus the thirty-five bought, there are nineteen left."

The boss cleared his throat, and it was rare to explain the algorithm step by step carefully and clearly.

Pei Xiu nodded, "Yes, that's it. Huzi, Zhou Heng, do you two understand?"

They both nodded.

Zhou Heng said with a smile: "Big brother didn't expect that you can't read, but math is okay."

"Master Zhou once said something to us, what did you say in that sentence? Oh, yes, if you ask God to close a door for you, he will open a window for you. Maybe God opened two for me. Windows, one is martial arts, and the other is math." The boss said with a smile and plausibly.

Pei Xiu patted him on the shoulder, "Don't be complacent, there is no end to learning, what you can learn is only the skin, you have to be humble, pride can make you complacent."

"It's mother, I know, I won't be so arrogant when I'm with my classmates. I just love to joke with them."

"It's good to know, put things away, and let's have dinner."

They screamed happily: "Oh, let's cook, let's cook."

In the evening, Zhou Cheng specially explained that Pei Xiu should not go out and wander around in the next few days. In two days, the village will start to rush to collect.

She said that she knew~ She usually only walked in the yard or the gate of the yard, and didn't go anywhere else, just went to the ground once that day.

Now that the delivery period is approaching, she doesn't dare to run around. In case of an attack outside, and Zhou Cheng is not around, who can hold her and move her.

She asked curiously, "Are sweet potatoes going to be collected these days?"

"Well, I hoeed a few trees in the afternoon, and they were quite big. I sent someone to deliver them to Qiu Baize. I'll see what he has to say tomorrow. We are also in the groping stage, and we don't dare to accept them easily." Also looking forward to it, it is best to harvest it early. Touching her belly, "Is the delivery period approaching?"

"I have seen the doctor before, and it is almost full term during this period. It is normal for a few days earlier or a few days later."

Sacrifice such as 99bxwx.com sacrifice such as. "I'm not guarding by my side. You have to pay more attention next time. When there is any movement, let someone notify me, and I will tell the guards to release it."

She nodded, he was on the ground, and he ran back quickly, she didn't worry about that.

Mi He Mi. The next day she started drying her own baby clothes, quilts, diapers, and mats for her own use.

Aunt Zhang wanted to help, but she stopped her. She didn't find something to do for herself. She was afraid that she would think wildly. After all, she was considered an older mother.

They were busy all morning, and when they were free, they stood at the door and saw the happy smiling faces of the old farmers who came and went by the field. It was the joy of the upcoming harvest. She also gradually calmed down.

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