I am a primitive

When Han Cheng saw such a scene, the smile on his face became stronger.

He leaned over to watch Yuan write and draw on the ground with a branch.

The first thing to be written on the ground is the nine-nine multiplication table.

According to the sequence taught by Han Cheng, the ninety-nine multiplication table can be written silently, but it has not yet reached the point of proficient use.

Therefore, when doing calculations, Yuan needs to write out the multiplication table first, and then look at the multiplication table to perform multiplication and division operations.

After writing out the multiplication table, she began to draw the division symbols with branches on the ground, and then divided 35 by five, and obtained the result of seven by referring to the ninety-nine multiplication table.

Then divide five by 350, and after some calculations, seventy is obtained.

The result of this calculation is correct, but it cannot solve the current problem.

Han Cheng could see the problem at a glance, but he didn't say anything. Instead, he stood there and continued to count circles like a first- and second-grade elementary school student.

After some calculations, Yuan wrote down the last subtraction formula. With the help of the counting finger, after some calculations, he subtracted 35 from seventy and got 35.

"Son of God, there is still so much oil in it that hasn't been squeezed out."

Yuan pointed at the bottles containing tung oil and said aloud.

Before making the calculation, Yuan vaguely felt that the oil in it hadn't been squeezed out, but after listening to Shenzi's question, this idea became more convinced.

However, she is still not proficient in using addition, subtraction, multiplication and division, and she can't tell the problem in one mouthful, so she just squatted on the ground and calculated it for a long time.

Wu, the second senior brother and the others looked at the two oil jars in the direction of the round fingers, with expressions of disbelief on their faces.

They could all see very clearly that this time a large pot of oil was squeezed out, weighing as much as 35 catties, which were all stored in these two jars.

And the second senior brother who was the strongest just now smashed it hard with a bronze hammer, but a few drops of oil did not come out. Under such circumstances, Yuan actually said that there is still 35% oil in this simple oil press. Come out, of course they don't believe it.

How can this be? !

"Son of God, is there really so much oil that hasn't been squeezed out?"

Wu scratched his thinning hair and said aloud, with a hint of bewilderment.

He didn't believe it at first, but seeing Yuan would say that there was oil in it, Wu also became a little unsure.

After nearly a year of living together, as Wu got to know Yuan better and better, he knew that Yuan was a very smart woman.

Although what she said at this time did not sound like the truth at all, Wu still murmured in his heart.

Especially when Yuan was squatting there just now, holding a branch on the ground, writing, counting, and counting fingers, and he was still muttering words, which looked very plausible and bluffing.

When Wu asked this question, the rest of the people, including Yuan who was a little nervous, all looked at Han Cheng in unison.

Han Cheng shook his head with a smile and said, "There's not that much oil."

As soon as this remark came out, Wu, the second senior brother, and the others immediately breathed a sigh of relief, especially the second senior brother, even opened his mouth, just saying, his arm was numb from the shock just now, and he needed all his strength. It's over, how can so much oil not be squeezed out under such circumstances?

There was a look of confusion and confusion on the round face. According to the calculation method taught to her by Professor Shenzi, there is still 35 catties of oil that have not been squeezed out. How can Shenzi say it now?

"It's not as much as the 35 catties that Yuan said, but it's still a lot."

Not waiting for the second senior brother and the others to be happy, Han Chenggong opened his mouth to attack everyone again. After saying this, he smiled and said to Yuan, "You can do the math again."

Yuan, who was originally full of entanglements and doubts, was told by Han Cheng without too much nonsense. She squatted on the ground and began to carefully check the calculation process she had just written on the ground.

During the process of careful inspection, Yuan would write and draw with the branch in his hand from time to time, his eyes full of thoughts.

After maintaining this state for a while, Yuan's eyes suddenly lit up, and after a short pause, he took the branch as a pen and began to calculate in another place.

Different from the sluggishness during the inspection just now, Yuan's writing speed is much faster this time, and the whole calculation process seems much smoother.

"Son of God, it is fifteen catties, not thirty-five catties!"

After doing such calculations for a while, Yuan, who was squatting on the ground, suddenly raised his face, looked at Han Cheng and said in surprise.

Han Cheng looked at her approvingly, nodded vigorously to her, and said with a smile, "Yes, it's fifteen catties!"

While saying these words, Han Cheng gave Yuan a thumbs up.

The priestess of Yuan, a former semi-agricultural tribe, is indeed smarter than ordinary people. Mathematics has always been taught in the tribe. Most people in the tribe can do addition and subtraction, but when it comes to multiplication and division, then Immediately caught blind.

For the remaining people who can multiply and divide, most of them can just calculate numbers on paper, but they cannot apply it to daily life to solve practical problems.

But Yuan, a female priest from a former semi-agricultural tribe, has not been exposed to mathematics for as long as most people in the tribe. It only took more than two months. As a result, she has been able to apply it to solve practical problems. .

Today's series of calculations, in addition to addition, subtraction, multiplication and division, actually involve some proportion issues.

Although Yuan didn't know much about this, he independently calculated the correct result.

Although the calculation was wrong the first time, it is already very rare.

After all, she has not been exposed to mathematics for a long time, and the actual application is much more difficult than simply calculating numbers.

Sure enough, mathematics is a subject for smart people, and talent really does matter a lot.

When people in the tribe do physical work, most of them are good hands, and they are not at all shy, but when it comes to various knowledge, many people feel weak in their legs and feet.

Chinese characters are better. After all, under the attraction of such well-known Qingque tribal classics such as "Little Tadpole Finds Mother" and "Monkey Fishing for the Moon", everyone is still very interested in learning these characters.

But mathematics that is more abstract and requires memorizing many rules is really a pain in the head. Even the best stones in the tribe are still scratching their heads when it comes to mathematics. You just know the four simple arithmetic operations, and if you go deeper, you will not be able to understand and learn.

In this whole tribe, the level of stone is first-class.

Now that he found a good seed like Yuan, Han Cheng naturally couldn't let it go, and he needed to be encouraged.

This will help Yuan better immerse himself in the fascinating world of mathematics, and go further and further, laying the foundation for the future development of the tribe.

Han Cheng, who came from later generations, naturally knows the importance of mathematics, especially after the society has developed to a certain level, Han Cheng is more aware of the role that higher-level mathematics can play in the development of society.

Advanced and complex mathematical knowledge is of course not needed when shopping for vegetables, but there are many other things in this world besides grocery shopping.

Mathematics, when Han Cheng was studying at the beginning, he was really embarrassed to lose his hair, but after working, he rarely used it, but he would not deny the significance of learning mathematics because of this.

Now that Han Cheng has come to this world, naturally he will not abandon him.

The man who was hit on the head by an apple said that it was easier to pick apples by standing on the shoulders of giants.

Compared with the current tribe, Han Cheng is undoubtedly a giant. If he can leave these things behind, then future generations, based on the foundation he laid, can also stand on the ground of others from birth. It is likely to be above the end point that is impossible to reach in his whole life.

Using this as a starting point, we can always go further and make the tribe better.

Of course, these are many years later.