Regarding the question of where the Arabic numerals came from, Zhang Fangping failed to ask a reason from Su Yuan's mouth.

Su Lu is young, you ask him where he learned it, and he also replies to you with a string of questions, "Is this very special, someone taught me, I will listen to it once, it turns out that you adults don't know it".

Zhang Fangping felt that it was necessary to find Su Jian to discuss Su Lian's education in depth.

How did Su Jian teach his son to be this virtue?

Smart is smart, but it's not slippery.

Take people into the ditch casually.

On the bright side, maybe it's really unclear.

Children's memories are messy, often they can't remember what they should remember, and they remember very clearly what they shouldn't.

Zhang Fangping asked for a long time, but he could only ask if someone had taught Su Lu before, but he couldn't ask who the other party's surname was, where he was, and he didn't even know whether the other party was a Song Dynasty or a foreigner.

Zhang Fangping could only put it aside for the time being, pondering the new number that was used on the cards.

If you talk about the writing of single-digit numbers alone, Arabic numerals are only a little less stroke, not much unusual, and what makes Zhang Fangping more concerned is the three cards of 10, 11 and 12.

According to this logic, there can also be 110, 1110, 11110 and so on, and the larger the number of words, the more it reflects the beauty of this new type of number.

Just compare "11,110" and "11110", it's very easy to write!

For example, if you want to do arithmetic, this method of writing is very convenient, and you can use a few fewer drafts.

Another example is to use numbers to make ledgers and drawings for records, and it is also paper-saving to change to such numbers.

Especially for construction or casting drawings, you can use this number mark next to the corresponding parts to mark the length, width and height, not only looks clear at a glance, illiterate people are also easy to learn, after recognizing ten numbers can understand.

Overall, this easy-to-learn number is very useful.

If it can be matched with the corresponding algorithm, it can definitely be written into the arithmetic textbook and promoted!

Zhang Fangping was not in too much of a hurry.

The child has a bad memory, he can slowly help Su Lu recall his memories, what if he can take out something else?

Zhang Fangping picked some questions he wanted to know and asked Su Lu around the bend, and quietly touched the rules of group numbers, carry methods, usage rules, etc., and looked at Su Lu as if he was looking at a huge treasure.

Facing Zhang Fangping's back and forth temptation, Su Lu felt that his back was cold.

Careless!

Why didn't you remember that Arabic numerals have always been the darling of crossing!

It's damn charming!

Emperor Qin and Han Wu, fell in love at first sight; Tang Zong and Song Zu, I can't stop!

With it comes the enemy of all scumbags, modern mathematics!

addition, subtraction, multiplication and division, basic operations; Algebraic geometry, commonplace!

From then on, all students in the world have to wander the sea of questions, always feeling the fear of being dominated by mathematics!

He, a good boy with discipline, conscience, and bottom line, even if he throws away his precious golden finger, he will never bring out this terrible thing to harm people!

The most important thing is what if his father asks him to learn.

He didn't want to count the addition, subtraction, multiplication and division of more than two digits.

He has a golden finger that is countless times faster than the human brain, and he can easily get results by typing numbers, so why should he learn mathematics?

The biggest difference between humans and animals is that humans have learned to use tools!

He, Su Lu, is already a mature human being!

One big and one small were at a stalemate, but they heard Ma raise the curtain and greet with a smile: "Official, it's time to eat." You're hungry, and children can't be hungry. ”

Zhang Fangping gave Su Lu a meaningful look, which meant "Let you go first, and the days will be long."

Su Lu began to consider the possibility of running away.

This father-in-law can't have it.

This father-in-law is too shrewd, what if in the future, this father-in-law thinks that he has a peerless talent that no one can match, forcing him to be angry?

He's really a little salted fish waste who just wants to eat and wait for death, it's better to be comfortable in bed and don't have to move by himself, women and men or something, he can accept it.

I have to urge my wife to exercise more as soon as possible, otherwise I am afraid that she will not be able to bear it, and he will feel distressed if he is tired of his wife.

Alas, how cute the little lady of the Zhang family is, smart and generous, but salt and sweet.

He really wanted to hold her hand and accompany her from Lori to the royal sister.

It's a pity that her father can't do it.

Marriage is not a matter of two people, it is a matter of two families, this father-in-law doesn't seem to get along very well, he will definitely be bullied by the Yue's family after he gets married, maybe he will take his wife and children back to his parents' house, force him to take the test for fame, and don't meet them if he doesn't get in.

Could it be that this is destined to be another fateful encounter?

It's not easy to get married, Su Lu sighed.

He doesn't want to work hard, he wants to go home and gnaw at the old.

Su Lu sadly followed Zhang Fangping to eat.

Su Shi and Su Zhe didn't notice the little cousin's heavy heart at all, Zhang Fangping, the master, moved the chopsticks first, and they immediately stretched out their chopsticks towards the oven roasted chicken.

The tender chicken fills the soup and hangs loosely on the bones, and the mouth is full of meaty aroma when you bite into it.

If you taste it carefully, you will find that it even tastes like the bones, and you have to suck it twice before spitting it out so that it doesn't go to waste.

Delicious!

The joy of being a foodie is as simple as that.

If Su Shi and Su Zhe were a little reserved at the beginning, after tasting the first piece of oven-roasted chicken, they gradually accelerated the speed of their chopsticks, and you and I eliminated the delicious chicken that seemed to be a considerable amount one by one.

Su Lu saw that the two cousins had forgotten to eat at someone else's house, and they didn't mean to be restrained at all, so they had to put away their worries first and join the camp to grab vegetables, so as not to have three chickens and bones left in a while.

It's really strange, when no one grabbed it before, the oven-roasted chicken was obviously not so fragrant.

Eat and drink to your heart's content, take a walk to maintain your health.

The moonlight was just right, Su Lu and Su Shi, Su Zhe, and Zhang Shu were wandering around in the small garden brought by the Houya, instilling Su Shi and them with health care knowledge such as "life lies in sports" and "walking a hundred steps after a meal, and living to ninety-nine".

Su Lu remembered that there was an article written by his cousin in the nine-year compulsory education textbook, which was about his cousin who didn't sleep in the middle of the night to find a friend named Zhang Huaimin, who was also a night owl who didn't sleep in the middle of the night.

At that time, his cousin looked at the black bamboo forests, cypress trees, and algae around him, and immediately burst out of wonderful inspiration, and wrote a short and concise "Night Tour of Ji Chengtian Temple" that has been recited for thousands of years!

Su Lu decided to insist on taking his cousin for a walk every day after dinner.

For one, walking is the only exercise he can stick to; Second, maybe in the future, this article will add a sentence "If my cousin were here, he would definitely hang out with us."

Kill two birds with one stone, wonderful!

Look at Zhang Huaimin, didn't he follow his cousin into the nine-year compulsory education textbook!

This is the happiness of the big guy taking the fly!

Envy, envy!

He wants it too!

One day, he will also become a man who will enter the nine-year compulsory education textbook!