Mathematics is a very scientific subject and an abstract concept. Take a look with me, for reference only.

Article 1

20 1X year x month x day sunny day

Recently, we are learning three-dimensional graphics. This caused me to think about the problem that most tea cones are cylindrical. Why? Is it polite or beautiful to make the tea cone cylindrical? Or ... no, no. I don't understand! Wondering, I made up my mind to solve this mystery.

Today, there came an uncle at home who I admired since I was a child. His name is Zhuge Liang. I picked up the tea cone and prepared to make tea for him. Suddenly I had a brainwave and asked him, "Uncle, do you know why most tea cones are cylindrical?" "My uncle asked me," tell me first, why? "I don't want my uncle to look down on me. I really want to find the right answer with what I have learned.

As time went by, I was sweating with anxiety, but I couldn't find the answer. At this time, my uncle patted me on the shoulder and said to me, "You might as well start with a figure with the same circumference, and the area of the circle is larger." Think again. After listening to my uncle's words, it suddenly dawned on me that using a cylindrical tea tube can not only hold more tea leaves, but also save materials. Knowing this, I contacted real life and proved my idea through painting.

I told my uncle this idea, and my uncle gently stroked my head and said, "You are good at finding math problems from real life and trying to solve them." I believe that you will be the future Zhuge Liang. "

the second

20 1X year x month x day sunny day

In life, mathematics is everywhere. For example: buy food! Buy stationery! Measuring cloth, etc. , all need to use mathematics.

This semester, the teacher taught a new knowledge, that is, the multiplication and division of decimals. This knowledge helps me a lot!

Last night, my mother went to buy oranges together. A kilo of oranges 1.8 yuan. My mother bought 4.5 kg and should pay 8. 1 yuan. But the clerk was careless and didn't know how to calculate it, so it became 9 yuan money. Fortunately, this semester, I used the knowledge of Protestantism, and after doing a calculation in my mind, I immediately corrected the salesman's mistake.

Not only did my aunt, the shop assistant, praise me for my cleverness and my ability to multiply and divide decimals in such a small city, but my mother also praised me for saving her 0.9 yuan on the way home, and the knowledge I learned can be applied in my life.

Yes! If you don't learn this math well, it's not only 0.9 yuan that will lose, but also hundreds, thousands or even hundreds of millions!

Article

20 1X year x month x day sunny day

The story says: A mother pig took three little pigs to buy flowers. 20 yuan, a flower, mother pig wants to buy 60 flowers. So, mother pig asked three little pigs, "We want to buy 60 flowers, one in 20 yuan. How much will that cost? " The biggest pig said, "20 times 60 equals 1200 yuan, so it costs 1200 yuan!" " The second little pig said, "No! Don't! It's two tens times six tens equals twelve tens, which is 1200 yuan! The youngest baby pig went on to say, "I think you are all right, but in different ways, they are all the same." "That's right!" Mother pig praised.

When it's time to tie flowers, the youngest baby pig first asks, "Now it's time to help flowers. 12 flowers tied together. How many bundles can you tie? " Mother pig didn't make a sound, so everyone shook their heads and saidno. After a while, the biggest baby pig cried. "1200 divided by 12 equals 100, so you can tie 100 flowers."

"Although we are tied up, we still have to send flowers to 20 grandfathers. How many bundles will each grandfather divide? " The little pigs said. After 30 minutes, the little pigs said, "Oh! We know that 10020=5, so each grandfather is divided into 5 bundles! "

The baby pigs gave the flowers to grandpa, and grandpa quickly said thank you. Little pig and mother pig are very happy.

Article 4

20 1X year x month x day sunny day

In the long history of mathematics, many mathematical geniuses have appeared. That is an example for us to learn, and it is also the focus in the field of mathematics. They devoted their lives to the study of mathematical knowledge.

Gu Chaohao is a famous mathematician in China, an academician of China Academy of Sciences and a famous professor of Fudan University. At the age of 24, he became famous in the field of mathematics, and his research paper entitled "Classic Field-Mill Young" was published as a monograph.

Have you ever heard of Goldbach conjecture? It is a jewel in the crown of mathematics. China's research on Goldbach's conjecture has reached the leading position in the world. The person who conducted this research was Chen Jingrun, a famous mathematician in China, who played an important role in the international mathematics field in the 20th century.

He * * * she * * are both brilliant figures in the field of mathematics, and it is precisely because of their contribution that people's love for mathematics is even more aroused. I believe that with our love for mathematics, we can also move the mountains of mathematics and contribute our strength to the country. Therefore, from now on, we must be ambitious, set up ideals and study hard for the prosperity of our motherland!

Article 5

20 1X year x month x day sunny day

At noon today, I was doing my math summer homework. I wrote and wrote, but unfortunately I met a very difficult problem. I've thought about it for a long time, and I can't figure out why. The problem is this: there is a cuboid, the product of the front and the upper two areas is 209 square centimeters, and its length, width and height are prime numbers. Find its volume. I saw it and thought: this question is really difficult! Only knowing the product of two surface areas, the volume must also know the length, width and height, but there is no hint at all. How does this start? Just as I was scratching my head, a colleague of my mother came. He taught me to use the idea of equation to solve it first, but I am not very familiar with this method of equation. So, he taught me another way: list the numbers first, and then exclude them one by one. First, we listed a lot of numbers according to the requirements of the topic, such as: 3, 5, 7, 1 1, and then we began to exclude them, and then we found that only1and 19 were left. At this time, I thought: one of these two numbers is the length of the common side of the front of the cuboid in the question; One is the front of a cuboid, and the length of the other side is * * * except the length of the previous side, and the length is the sum of prime numbers * *. So, I began to tell which number these two numbers were. The final result is 374 cubic centimeters. My formula is: 209 =11919 = 2+171× 2×17 = 30.