Hearing this, Jian Xiu nodded in understanding.
The two brothers even passed the painting competition and received such high praise from Mo Yuhuai.
Jian Xiu is more confident about arithmetic.
"Dean Mo, let's begin!"
Mo Xiaohuai nodded and asked the two of them, "Are you all ready?"
"Dean, we are all ready."
Mo Xiaohuai nodded, and then he said, "I use ten copper coins to buy eggs. Eggs are three for one copper coin, so how many eggs can I buy with these ten copper coins?"
As soon as the question was asked, the two brothers did not start pointing their fingers like his other students.
On the contrary, the two of them were looking somewhere very calmly, obviously thinking.
Seeing them like this, Mo Xiaohuai, who was standing by, became a little anxious.
This problem is very common and he did not make it particularly difficult for the two children.
But if it's normal, you can basically figure it out if you do the math carefully.
Is it that this question is too difficult for them? They have no clue at all?
Or...
"Dean, can we buy thirty eggs?" the two brothers replied at the same time.
"Sure?"
"Sure!" they said in unison.
Hearing this, Mo Xiaohuai fell into deep thought.
Because from the way the two of them answered the questions just now, it seemed that they did not use any tools to calculate.
Directly, it counts.
It is also very accurate and extremely fast.
Thinking of what Jian Xiu said just now, Mo Xiaohuai continued:
"Well, very good, you have passed this question. The dean will ask you another more difficult question, so you must be prepared."
"Okay, Dean, please give the questions!"
"A vine is about ten feet long. If two and a half feet are used every day, how many days can this rope be used?"
Relatively speaking, the difficulty of this question is indeed increased.
After Mo Xiaohuai finished asking the questions, his eyes never left the two brothers.
But seeing that the two of them were still as calm as before, I became more puzzled.
If they can solve such a problem by calculating it again, then they are really talented.
"If you find it difficult..."
"Replying to the Dean, it's twenty-eight days!"
Before Mo Xiaohuai finished speaking, the voices of the two brothers came over.
Hearing this, Mo Xiaohuai's eyes widened and he looked at the two brothers without saying a word for a long time.
You know, he came up with these topics impromptu.
There is no such thing as stealing questions.
Moreover, he saw both of them with his own eyes, and it was obvious that they had calculated it by calculation.
Thinking of what Jian Xiu had said just now, Mo Xiaohuai became excited.
Seeing the two brothers looking at him expectantly, Mo Xiaohuai spoke:
"Congratulations, you have passed the exam. You are now students of Xuewen Academy. You can come to the academy tomorrow."
After these words, the two brothers became visibly happy.
But when I thought of this place, I had to suppress my excitement.
"You two should go out first! The dean and your mother still have something to discuss!"
Mo Xiaohuai said to Zhang Feixuan and Zhang Feiyi.
As for his grandson Mo Ziran and Zhang Feilan, they already knew where they were going to play.
"The dean must want to ask me about the arithmetic question I asked just now!"
After everyone left, Jian Xiu was the first to ask.
"The young lady is indeed a straightforward person!"
"Master, I'm telling you, this is something I saw in a travelogue. It's called the multiplication formula. If you memorize it, you will find that it has many benefits!" Jian Xiu said lightly.
In fact, Jian Xiu wanted to tell them about the ten-addition method, the ten-addition method...
But she herself knew that saying too much might backfire.
After thinking it over, I decided to just take it slow.
There is still a long way to go anyway!
You've traveled through time and space, and you have a lot of knowledge in your head. Are you afraid to use it?
"Multiplication formula? Is this the secret?" Mo Xiaohuai asked excitedly.
When he asked this question, he stood up immediately.
You can see how excited he is.
However, when Jian Xiu heard the word "secret", she was immediately amused by Mo Yuhuai.
It is said that the more Jian Xiu gets along with Mo Xiaohuai, the more relaxed she feels.
He has all the qualities that a master should have, but he doesn't have the stubborn nature of a master.
"Do you know what the young lady is laughing at?" Mo Xiaohuai asked seriously.
I didn't realize how ridiculous I looked at this moment.
After hearing this, Jian Xiu didn't say any more nonsense.
He immediately handed the multiplication formula he had written earlier to Mo Xiaohuai and said, "Dean Mo, take a look at this!"
"What's this?"
"Dean Mo, let's see first!"
"What does it say two people one here?"
"This is the multiplication formula! This means one times one!"
After these words came out, Mo Xiaohuai was even more confused.
Jian Xiu had already anticipated this.
So he explained to Mo Xiaohuai the usage of the mnemonics one by one.
"For your question, if I do the calculation backwards, it is completely feasible. Not only is it much faster in terms of time, but the possibility of error is also very small..."
"Dean Mo?"
"Dean Mo......"
After shouting twice in a row, Mo Xiaohuai just sat there without moving.
Jian Xiu: “…” Is it necessary to look so surprised?
Looking at Mo Xiaohuai's frightened expression, Jian Xiu was really speechless.
Helplessly, Jian Xiu just picked up the tea beside her and drank it slowly.
There's no way. I talked too much just now and my mouth is a little dry.
After a long time, Mo Xiaohuai came back to his senses, stared at Jian Xiu blankly, and asked:
"Young lady, do you still remember the name of the travel book you read?"
Jian Xiu: “…” Can it be called “Jian Xiumo’s Travels”?
"Does the young lady remember it?" Seeing Jian Xiu's speechless expression, Mo Xiaohuai said sadly again.
"Indeed I remember it. When I read it, the book was quite worn out, and it was only mentioned casually in the book."
Jian Xiu made up an excuse and said with a laugh.
"Multiplication formula? Good, good, this name fits, the name fits, it really is... good, good... very good, very good..."
Mo Xiaohuai spoke incoherently.
At this moment, even he himself knows what he wants to express, right?
However, Jian Xiu probably also understood that this multiplication formula was something that every student needed to memorize in the end.
What about here?
"With this multiplication formula, I believe that our Academy will win this competition!" Mo Xiaohuai said excitedly.
Seeing this, Jian Xiu shook her head helplessly.
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