Shiro saw Tang Xiaosu suddenly raise his head, and he didn't have time to collect the expression on his face, and was caught by Tang Xiaosu all of a sudden.

Listening to Tang Xiaosu's slightly threatening words again, he scratched his head a little embarrassedly: "Little sister, didn't I play with you, you see, this road is so long, we can't be lifeless, right?"

Even if you tell us about arithmetic, you can't talk to us all the time, so I'll find something else to talk about so that we can relax and relax, so that we don't feel tired when we walk. ”

Tang Xiaosu also knows what Shiro means, but she has always been teased by him, Rao's Tang Xiaosu is from the 21st century, and she will feel embarrassed to be teased by her brother like this.

So Tang Xiaosu snorted coldly at Shiro: "Second brother, if you still want me to tell me how to count, and if you want me to teach you, then from now on, you don't want to make fun of me and Brother Wuyi, otherwise, I will tell Brother Wuyi, tell Big Brother Wuyi, tell Liulang at home, don't tell you, let you be in a hurry by the side." ”

Shiro also knew that Tang Xiaosu was joking with him, but he also pretended to be very anxious: "Little sister, you can't be so forgetful, the second brother said these words for you, you can't abandon the second brother at a critical moment, so the second brother will be very sad." ”

Tang Xiaosu looked at Shiro who was like a living treasure, and he couldn't cry or laugh a little, especially after listening to Shiro's words, the corners of his mouth kept twitching.

After a while, Tang Xiaosu began to say: "The reason why I calculate so quickly is because I used a special method, I don't know if you have heard of this method. ”

"What is it?" The three of them said in unison.

"It's called a multiplication formula." Tang Xiaosu said.

"What is the multiplication formula? Why haven't we heard of it? Wu Yi frowned, and searched carefully for everything he knew, to see if there was such a thing as a multiplication formula.

But the memory of Memoryless was missing, so he didn't search for it.

"You don't care what the multiplication formula is, even if you ask me now, I won't tell you, and when the time comes, I'll tell you.

As long as you memorize the multiplication formula, and then calculate the account, it will be easier to calculate, and it will be faster and more time-saving. ”

Since he decided to say it, Tang Xiaosu didn't plan to hide it, and directly said the multiplication formula of his arithmetic previous life.

"I can memorize multiplication formulas, is this thing easy to memorize." Saburo and Shiro, as well as the three of them, looked at each other and didn't know what it was, because they had never heard of it.

However, I heard Tang Xiaosu tell them, don't ask, and if you ask, you won't tell them, so I stopped asking Tang Xiaosu one by one.

"It's not difficult at all, it's very simple, it's like an endorsement, so let's wait tomorrow when we go to town and come back with some paper and pens.

Then I write down the multiplication formula, and you memorize it according to the multiplication formula, and then it will be easier for you to memorize the multiplication formula, and then it will be easier to calculate some accounts. ”

Tang Xiaosu originally wanted to write down the multiplication formula when he went home and let the three of them memorize it, but when he thought about it, no one in the family went to school, and the family had no money before, so he couldn't afford to buy paper and pens at all.

And in the entire Tang family, except for the fact that there is paper and pen in the Tang family's big house, Tang Xiaosu is not willing to lick his face to borrow it just for a little paper and pen.

That's why Tang Xiaosu changed his words and said that he would write for them tomorrow after buying paper and pens, and then let them look at the back.

San Lang was a little impatient to know what Tang Xiaosu's multiplication formula was, so he said to Tang Xiaosu: "Little sister, can you read it first and let us hear it?" ”

"Yes, but before I read it, you should first read the numbers from one to one hundred several times in your hearts, especially from one to nine." After Tang Xiaosu finished speaking, he looked at the three people who were repeating the numbers in their hearts while walking.

After a while, Tang Xiaosu asked the three of them: "You have all read it in your hearts, if it is about the same, I will start to memorize it for you, if I memorize it again, you can all remember it, this is the best, because then we don't have to buy paper and pen to write it down, and it is more confidential." ”

No one answered Tang Xiaosu's words, because they were all looking at Tang Xiaosu very seriously, and waiting for Tang Xiaosu to memorize the multiplication formula next.

"One gets one, one two gets two, one three gets three,......, eight nine seventy-two, nine nine eighty-one." After Tang Xiaosu finished reciting, he peeked at the three of them.

Seeing that the three of them were frowning, he opened his mouth to remind the three again: "Big brother, second brother, big brother without memory, I'm done memorizing, do you remember it, or if you have any questions, you can ask me, it doesn't matter if you don't remember it, after all, I just read it once." ”

As soon as Tang Xiaosu's words fell, Shiro couldn't wait to say: "Little sister, I don't know if you memorized it too fast, or if this number is too much, I only remembered the first half, and I didn't remember the second half." ”

Tang Xiaosu was surprised by Shiro's memory, although he only remembered the first half and didn't remember the second half, it was much better.

After all, they can't see the words, they rely entirely on their own memorization, their own memory and hearing.

So Tang Xiaosu opened his mouth to encourage Shiro: "Second brother, you are already very good, like this multiplication formula, if I can't see the words, I can't memorize it again or twice,

I watched it many times before I could memorize it, and I read it many times, but you didn't read it, just listen to me memorize it once, and you can remember the first half, so you are much better than me. ”

Although he listened to Tang Xiaosu's words, although he was angry with himself, he was helpless, so he only said one word: "Hmm." ”

Shiro was not very satisfied with his performance, so he shifted his gaze to the frowning Saburo and asked, "Big brother, how much have you remembered?" Have you memorized them all? ”

In Shiro's cognition, Saburo, who was born a few minutes earlier than him, is much smarter than him, so he asked this question, hoping that Saburo would be different from him and memorize all the multiplication formulas.

Saburo frowned, listened to Shiro's words, didn't speak for a long time, and then shook his head at Shiro, and sighed with a little pity: "I didn't remember it all, I missed the next section." ”

Shiro and Tang Xiaosu were both disappointed when they heard San Lang's words, but it was only for a moment.

In the end, the eyes of the three of them fell on Wu Yi, who was still pondering.

The three brothers and sisters didn't take the initiative to speak, and looked at Wuyi without moving, the purpose was obvious, that is, they wanted to ask Wuyi if he remembered everything.

Wu Yi suddenly opened his eyes, looked at the three people close by, and smiled slightly: "Don't worry." ”

When Tang Xiaosu heard Wuyi's words, he thought that Wuyi was the same as Saburo Shiro, he only memorized half of it, and the other half would not be able to.

So she smiled a little wryly, and began to comfort Wuyi: "Brother Wuyi, it's normal not to memorize this time, my eldest brother and second brother didn't memorize them all, even I have been studying for a long time, and the three of you are already very good." ”

"When will I tell you, I didn't memorize." Wu Yi heard Tang Xiaosu's comfort, hooked his lips and smiled, and asked Tang Xiaosu rhetorically.

Tang Xiaosu was slightly stunned: "Then you didn't say that you would memorize it, so since you didn't say that you would memorize it, wouldn't you just not?" ”

Wu Yi thought thoughtfully about what Tang Xiaosu said, and nodded: "Xiao Su, it makes sense for you to think like this, but what I want to tell you is that I will memorize it, and it will be word for word, I will know everything, do you want to test it." ”

Tang Xiaosu was still immersed in the state of saying that he would not remember anything, he didn't hear what Wuyi said, and continued to comfort Wuyi: "Brother Wuyi, if you don't memorize everything, you won't memorize everything, and it doesn't matter, I'll read it again later, you can listen carefully, and listen to it twice more." ”

San Lang and Shiro also persuaded Wu Yi together: "Yes, Brother Wu Yi, although you are a little older than us, but you have been injured in the brain before, and you may not be so bright, so it doesn't matter if you don't memorize them all, wait a minute, let's listen to the little sister recite it again, and then follow her to learn, just learn a few more times." ”

Wuyi twitched the corners of his mouth, San Lang and Shiro said this, are they saying that his brain is not good in disguise.

He remembered that what he just said was that he would memorize it, and it was word for word, he would memorize it all, why did the three brothers and sisters still blindly say that they wouldn't, comforting themselves, so not to be sad or something.

When the three of them were almost comforted, Wu Yi repeated what he had just said: "Xiao Su, San Lang, Shiro, I said that I can memorize the multiplication formula, and I will memorize it word for word, I can memorize it all, you don't have to comfort me, I'm fine." ”

Tang Xiaosu listened to Wuyi's words, and unconsciously repeated: "Oh, I know, you can memorize the multiplication formula, well, you are fine, I know, I just comfort and comfort you, it doesn't matter if you can memorize." ”

When Tang Xiaosu said this, he suddenly stopped, and then looked at Wuyi with wide eyes in disbelief: "Brother Wuyi, what do you say, you can memorize the multiplication formula, and it is the kind of one that does not fall word for word, and can memorize all of them." ”

"Brother Wuyi, you can't talk nonsense, if you can memorize it, if you can't memorize it, you can't memorize it, you can't listen to it once, what kind of memory do you have?" Shiro was the first to ask questions.

And Saburo also looked at Wuyi with a puzzled gaze, as if to confirm whether what he said was true and credible.

"Don't worry, I said I will memorize, that is, I will memorize, this kind of thing can't lie, if you don't believe it, I can recite it to you."