The magic composition of mathematics 1 mathematics, a familiar word, is ordinary and beautiful. You may say, "Isn't mathematics just a few Arabic numerals? How can it be beautiful?" However, it is its simplicity that makes it beautiful and magical.
The first time I know mathematics is a simple "1, 2,3". Is this the math I imagined? However, I was wrong. What I see is only the surface, and there is a deeper meaning. The difficulty of mathematics is gradually deepening. From addition, subtraction, multiplication and division to decimals and fractions, the mystery and beauty of mathematics are gradually presented to me. Mathematics is like a big group, and numbers are like happy spirits, dancing all day. "1" is their eldest brother, keeping his body straight and looking dignified; And "2" is like a quiet girl, twisting her body and looking shy; "3" is a strong young man with optimistic nature and lofty ideals ... Other brothers and sisters are even more handsome and beautiful, each with his own unique skills. These ten elves get along day and night, unite as one, and sisters see too little. They will also self-assemble and produce new numbers! Look, "1" saw that "0" was too lonely and timid, so it took the initiative to combine with it and be with it, resulting in "10". Other brothers and sisters were inspired and responded in succession, and huge numbers spread all over the world.
Numbers are not enough. The elves felt that it was not lively enough, so they invited more playmates. As a result, the decimal point came, the score came with the family, and the letter was invited ... everyone invited came from all directions. The kingdom of mathematics is very lively! However, despite coming, the naughty nature still cannot be changed. Look, the decimal point of "naughty boy" jumped from the side of "2" to the front of "3" when the owner was not paying attention. Seeing the owner anxiously looking for it, it laughed at the side, just like playing hide-and-seek with the owner. For this reason, I was fooled by it. Seeing its triumphant appearance after "victory", I secretly made up my mind: I must form a good habit of being cautious and seize this naughty decimal point! Soon, during the exam, we met again When we saw it was me, the decimal point said contemptuously, "Hey, hey, why are you back?" Said, trying to confuse me with "housekeeping skills." I saw through its trick at once, quickly caught it and put it back in its place. The naughty decimal point was finally subdued. Looking at its dejected appearance, a little comfort came to my mind.
If it is only appearance, mathematics is not beautiful enough, but its unique inner beauty makes it immortal. Mathematics has a wide range, and there is more room for communication. Indians created it thousands of years ago, and Arabs will modify it later. It has powerful expressive force, visualization and rapidity to cast its immortal history. How many things has it accomplished? Which of the seven wonders of the world was not accomplished under the influence of mathematics? From Zu Chongzhi's accurate calculation to Chen Jingrun's Goldbach conjecture, from Edison's thousands of inventions to the high-tech world, mathematics has played a decisive role! Without mathematics, how can there be many inventions? Where do conjectures and theorems come from? Which project will go smoothly? Mathematics is selfless, it gives everything to everyone and never asks for anything; Mathematics is fair, it only dedicates itself to hard-working people and encourages them to continue their struggle; Mathematics is "heartless", it hates laziness, and it ignores greedy and unwilling hands. Mathematics is like a ribbon, which closely connects itself with people's lives. What would the world be like without this ribbon?
In fact, the beauty of mathematics goes far beyond this. It brings people the joy of independence, success and the spirit of exploration and discovery. It dedicates its beauty to everyone who loves mathematics. Mathematics is the first drop of spring rain, nourishing the earth; Mathematics is the sun in summer, full of passion; Mathematics is the field of harvest in late autumn, which brings people infinite joy; Mathematics is a snowflake in winter, white and flawless. It is the crystallization of wisdom and sweat, it is the best gift for strugglers, and it is the immortal hero of eternal culture. Ah, my friend, fall in love with mathematics, sow the seeds of wisdom, shed hard sweat and reap the joy of success!
The magic composition of mathematics 2 8 1×89=? Do you need a few minutes to answer this number? I can work it out in two seconds. Can you believe it? Maybe you will say, "How is that possible?" This is because I have mastered the calculation method of "beginning and ending". Come with me to the magical mathematics kingdom to find the answer.
I have been interested in numbers since I was very young. What's the connection between these figures? I just want to know. When I take the bus, I will count how many stops I have to take to get home; When eating, I will remember how many bowls of rice I ate with my parents. When I sleep, I will remember when to sleep, when to get up, and count how many hours I slept. Slowly, I learned a lot of magical knowledge. The number 10 from 0 to 9 can form an infinite number, and the combination process is unpredictable and fascinating.
After entering primary school, I began to really enter the kingdom of mathematics. Through studying, I began to solve the mystery of mathematics in the kingdom, and mathematics has become my favorite subject. Entering the kingdom of mathematics, we see endless problems every day, such as the problem of sum times, the problem of difference times, the problem of sum and difference, the problem of planting trees, the problem of chickens and rabbits in the same cage, the calculation of twenty-four points, crossword puzzles, symbols, simple operations and so on. I feel like a greedy little squirrel, picking up interesting math problems and "eating" them one by one. Some topics, I "finished" in a few minutes, and I feel that it is commonplace; Some topics, I want to "eat" all day, the taste is really memorable; There are still some questions about how to "not eat", so I have to ask my parents for help, master new methods, and finally "swallow" with ecstasy.
There are many unsolved mysteries waiting for us in the kingdom of mathematics, and I am eager to solve them! Although I often encounter difficulties, I am not afraid. Because I believe that as long as I study hard every day, I will be able to travel more happily in the kingdom of mathematics.
The magic composition of the third part of mathematics is very concise and clear with letters, which makes people see at a glance.
But do you know who invented letters to represent numbers? He is the French mathematician Veda. He studied mathematics all his life and made many contributions, becoming the greatest mathematician of that era. Since the Vedic system used letters to represent numbers, many mathematical discoveries have been made and many complicated mathematical problems have been solved.
Letters indicate that numbers are used everywhere in life, such as license plate numbers. As you must know, the rear of every car has a license plate number, and the first few letters of the license plate number indicate which city the car belongs to; For example, Su D said that this car belongs to Changzhou City, Jiangsu Province; Another example: Wan K indicates that this is Fuyang, Anhui, and so on. In addition to the license plate number, you can also indicate the house number. For example, my family lives in Room 302, Unit A, Building 6, so it can be expressed as 6A302, which is really simple, convenient and easy to understand. It is really ubiquitous to use letters to represent things in life!
Math is very interesting. Unlike memorizing English, it depends on your ability to explore. So we must learn math well. Let's discover and explore the mystery of mathematics together!
Today, my parents and I happily visited the zoo. When I walked to the gate of the zoo, I met a problem. I saw at the ticket office that an adult ticket for 56 yuan and a child ticket are all half-price. Gee, how much are our tickets? Seeing that children's prices are all half price, I feel deja vu. I thought and thought, and suddenly my light flashed, ah! It turned out to be similar to the topic in our math book, but in a different way. I remember that the teacher's half-price increase was half of the original price. It turned out that my ticket cost 56÷2=28 yuan. To figure out how much a * * * is worth, it is 2×56= 1 12 (yuan), 1 12+20. Ah, the problem is finally solved. After dad paid the money, we walked into the zoo happily.
At this time, we came to the elephant area, surrounded by people, some taking pictures, some feeding, some cheering ... I have a pair of eyes and found that the sign says: an adult elephant eats about 800 kilograms of food every day. My mother also saw it and smiled and said to me, "Can you find out how many kilograms of food an adult elephant eats a week?" I think there are seven days in a week, so there are seven 800, and the formula will be listed as 7×800=5600 (kg). I excitedly said to my mother, "mom, mom, I worked it out!" An adult elephant eats about 5,600 kilograms of food a week. " Dad asked again, "How many tons and kilograms of food does that adult elephant eat every week?" I thought, how to calculate tons? A big question mark popped up in my mind. So, my thoughts flew into the classroom again, thinking that 1 ton = 1000 kg, then 5600 kg is equal to 5 tons and 600 kg. I shouted excitedly to my father, "An adult eats 5 tons of 600 kilograms of food a week." Mom and dad said in unison, "You are so smart!" I'm flattered.
Time flies. As I walked back, I silently thought that the mystery of mathematics is endless. As long as you pay attention everywhere, you will find that mathematics is really everywhere in your life.
Whenever I see a famous magician performing magic, I always think: Can you do magic? Why is his magic always incredible? When the phrase "it's time to witness a miracle" rings in my ear, I quietly wait for the miracle to happen ... I often think: if one day I can do magic, how wonderful!
One day, my father came back from the outside and mysteriously said to me, "MengMeng, you have four consecutive natural numbers in your mind, such as 1, 2, 3, 4;" 20, 2 1, 22, 23 ... and then subtract the product of two smaller numbers from the product of two larger numbers. As long as you tell me the difference, I can quickly guess which four consecutive natural numbers are in your mind. " "What what?" I stared at my father and said, "It's too complicated! "Dad patiently explained it to me again." Oh! I see. Um ... 46! "I wanted to think, loudly said. Dad blinked mysteriously, rolled his eyes again, and immediately said to me, "What you are thinking about is 10, 1 1, 12, 13, right?" I said in surprise, "It's amazing! You guessed it! "
"Don't dad have telepathy. Ability? Did he learn magic, too ..... "A series of questions flashed through my mind. Dad looked at my puzzled face and showed a satisfied smile. He asked me tentatively, "Do you want to know how I guessed which four numbers you were thinking?" "Of course I want to know, say it, say it!" I said urgently. Dad said slowly, "I'll subtract 6 from the number you told me and divide it by 4, and I'll know the smallest number." "But why?" I want to know. Dad paused again and said, "In fact, the difference between the product of four consecutive natural numbers and the product of two largest numbers minus the product of two smallest numbers is the sum of these four numbers. If you know and then calculate the average, you can find the smallest number. "
"It's so simple! I see. I understand! " I cried happily. Dad saw me in high spirits and said to me, "I'm going to test you now." 50! "I thought for a moment and said loudly,"112-13-14. " Dad gave me a thumbs-up, blinked and said, "22". I blurted out, "five, six, seven, eight!" " Dad said happily, "Great! You are a little magician now! "Don't mention my joy.
"Here is the moment to witness the miracle!" This sentence rings in my ear again, but I feel as if I have become "small". The mathematical world is really wonderful, and there is magic in it! I think: In the future, I will try to explore more mathematical mysteries!
Once upon a time, there was a mysterious field called "mathematical dimension space", which was occupied by a group of creatures with similar numbers. People call them digital elves. With the continuous innovation of science and technology, after tens of thousands of years of evolution, the digital elves finally invented a unique magical high-tech product, the mathematical magic pen.
The math magic pen is mixed with smart chips, so it can be connected with a computer and easily complete every math problem. Because there are too many people who want him, his master Baiwang asks the wizard to cast a spell, and all creatures who get him and use him will be punished. Lingling is a simple and lovely little fatty, and her classmates like her very much, but her academic performance is not ideal. Lingling listened to the first half of the legend and found it very reliable, so she went to look for the legendary mathematical magic pen. On the way home that day, Linlin picked up a mechanical pencil with a magic pen on it in the garbage, and took it home to prepare for tomorrow's exam. The next morning, after breakfast, Lingling rushed to school with the pen she found yesterday and finished the exam. Lingling went home with her 100 120 test paper. Mom and dad were not happy to see the paper, but asked Lingling with a straight face, "Did you cheat?" Linlin stammered "Well", and her mother took all Linlin's pocket money for a year to make amends. This is punishment. This story tells us that there is no free pie in the world, and if there is, it is also a charity from God. Only by working hard on your own can you achieve real success.
The magic composition of mathematics 7 In today's math class, we are learning "three numbers times two numbers". When xu teacher said, "Classmates, we have basically finished learning the new lesson today", I thought: Next, we must open our exercise books and do our homework. But something unexpected happened. The teacher said, "shall I show you a math magic trick?" The students all cheered with excitement. Cheer loudly.
The teacher opens the slide, hey! It turned out to be a math problem. The teacher smiled cunningly and told us mysteriously, "Students, if you multiply 167 by any two digits, and add 1500 to the last two digits, the teacher will definitely be able to say what you think. Finally, it was my turn, and I couldn't wait to quote the last two figures. Count. I saw the teacher with a wry smile, pretending to breathe the immortal spirit, and put it in his ear and said, "84!" " "deskmate hurriedly check documents, guessed it.
Another classmate asked questions, and the teacher pretended to be a fairy and said with a smile, "89!" " Her deskmate was stunned at first, and then said in surprise, "That's right! The teacher suffered! " Good cow! "Later, the teacher called several classmates. As a result, all the questions were answered correctly by xu teacher. It's really nothing. At this time, the teacher suddenly asked a small question: Have you figured out how the teacher came up with it? " The whole class was so silent that even the needles fell to the ground. The students racked their brains and thought hard. Just then, "Bang!" Yes, my deskmate stood up. He said to the teacher, I know the algorithm of unit, and my deskmate explained it to us. We have a clue. Another student said the algorithm of ten digits. Finally, the teacher concluded: "Just multiply the two digits you already know by three and take the last two digits of the product, and this is the number." "The students suddenly realized that the hut was open.
Through the first 10 minutes of this class, I love math more!