Children's humorous digital stories

Interesting Mathematical Story 1: Buffon Experiment One day, French mathematician Buffon invited many friends to his home to do experiments. Buffon spread a big piece of white paper on the table, which was covered with parallel lines with equal distance. He also took out many small needles of equal length, the length of which was half that of parallel lines. Buffon said, "Please feel free to leave these small needles on this piece of white paper!" " The guests did as he said. Buffon's statistics show that everyone * * * throws 22 12 times, in which the small needle intersects the parallel line on the paper 704 times, and 2210 ≈ 704 ≈ 3.142. Buffon said, "This number is an approximation of π. Every time you get an approximation of pi, the more times you throw it, the more accurate the approximation of pi is. " This is the famous Buffon Experiment. Interesting Math Story 2: The Math Magician 198 1 held a mental arithmetic contest on a summer day in India. The performer is a 37-year-old woman from India. Her name is Shagongtana. On that day, she will compete with an advanced electronic computer with amazing mental arithmetic ability. The staff wrote a long list of 20/kloc-0 bits, asking to find the 23rd root of this number. As a result, it took Shagongtana only 50 seconds to report the correct answer to the audience. In order to get the same answer, the computer must input 20,000 instructions, and then calculate, which takes much more time than Shagongtana. This anecdote caused a sensation in the world, and Shagongtana was called a "mathematical magician". Interesting Math Story 3: Small change A customer bought a walking stick from 30 yuan from a walking stick shop. He took out a ticket for 50 yuan and asked for change. Just as there was no change in the store, the shopkeeper went to the neighbor's house to change 50 yuan's ticket into change and gave the customer 20 yuan's change. Just after the customer left, the neighbors came running in a panic and said that this ticket for 50 yuan was fake. The shopkeeper had to compensate his neighbor 50 yuan. Then I went out to chase the customer, caught him and said, "You liar, I paid 50 yuan, neighbor, and I gave you 20 yuan. You took a crutch, and you have to compensate me 100 yuan. " The customer said, "A crutch. I would like to add here that the cost of crutches is 20 yuan. If this customer succeeds, how much will * * * cheat? Interesting math story 4: the problem of the train running in the opposite direction. Two trains are running in opposite directions along the same track: 62616964757A 68696416FE78988E69833133365653763. The speed of each train is 50 miles per hour. When the distance between two carriages is 100 mile, a fly flies from train A to train B at the speed of 60 miles per hour. When it meets the train B, it immediately turns around and flies to the train A, and so on until the two trains collide and crush the fly into pieces. How far did the fly fly before it was crushed to death? We know that the distance between two cars is 100 miles, and the speed of each car is 50 miles per hour. This means that each car has traveled 50 miles, that is, two cars collided one hour later. During the short time from the train to the collision, the fly kept flying at 60 miles per hour, so when the two cars collided, the fly flew 60 miles. Whether the fly flies in a straight line, along a "Z" line or rolls in the air, the result is the same. Pig ate some peaches and went to Huaguoshan to find Wukong. The Great Sage was not at home. The little monkeys warmly entertained Bajie and picked 100 of the most delicious peaches in the mountains. Pig said happily, "Let's eat together! "How to eat it? Counting ***30 monkeys, Bajie found a branch and drew it on the ground, and listed the formula, 100 ÷ 30 = 3... 1. Bajie pointed to the above three monkeys and said generously, "Each one can eat three pecans. Listen, I'll eat the remaining 60. The little monkeys were very grateful to Bajie. They thanked him one by one, and then each took his share. When Wukong came back, the little monkeys told Wukong how generous Bajie was today and why he only ate a pecan. Seeing Pig's arrangement, Wukong shouted, "What a fool! I'll find him! " Haha, do you know how many peaches Bajie ate? The origin of Arabic numerals Xiaoming is a child who likes to ask questions. One day, he became interested in the numbers 0-9: Why is it called "Arabic numerals"? So he went to ask his mother, "Since 0-9 is called Arabic numerals, it must have been invented by Arabs, mom?" Mom shook her head and said, "Arabic numerals were actually invented by Indians." About 1500 years ago, Indians used a special word to represent numbers. There are 10 words, and you can write both strokes. Later, these figures were introduced into Arabia. Arabs think these numbers are simple and practical, so they are widely used in their own countries and spread to Europe. In this way, it gradually became the number we use today. Because Arabs have played a great role in spreading these numbers, people are used to calling them' Arabic numbers'. "Xiao Ming said," so that's it. Mom, can this be called' making a mistake'? " Mom smiled. Children's Song Competition The animal school held a children's song competition, with the elephant teacher as the referee. The little monkey raised his hand first and began to recite: "I can calculate carry addition, and the digits can only be added if they are aligned." "The number of digits is aligned with the number of digits. When the number of digits exceeds ten, the number of digits should be advanced to ten. Add ten and one to count quickly and accurately. " As soon as the little monkey finished speaking, the puppy began to recite again: "abdication and subtraction are not difficult, just align the numbers." If the single digits are small enough, ten people can borrow one. If ten people return, one will be ten, and if they return, one will be missing. How to reduce ten digits, ten digits will be reduced again and again. "Everyone applauded for their wonderful performance. Teacher Elephant said, "Their nursery rhymes make us understand that both carry addition and abdication subtraction should win the championship, ok?" Everyone agrees and applauds them. A long time ago, the kingdom of mathematics was quite chaotic. The 0-9 brothers not only dominate the kingdom, but also boast of their greatest skills. The math angel was very angry when he saw this situation. He sent three little angels to the math kingdom to establish order and avoid chaos. Three little angels came to the kingdom of mathematics, and 0-9 brothers looked at them contemptuously. Q: "What are you three doing in the kingdom of mathematics? You are not welcome! "= said with a smile:" We are judges sent by angels to help you govern the country. I am an equal sign, and these two are' greater than sign' and' less than sign'. Whoever they speak to is greater. The people they refer to are all small people. "When the ten brothers heard that they were judges sent by angels, they obediently obeyed the order of" and = ". Since then, the mathematical kingdom has a strict order, and no one will violate it. Bear opens a shop Bear doesn't like studying, just wants to do business, so he opens a fruit shop next to the school. Rabbit and monkey are his classmates. They have agreed to teach this lazy guy who doesn't like school. They came to Bell's fruit shop. "How much are these peaches? "The little monkey asked the first basket for 6 yuan and 3 Jin, and the second basket for 6 yuan and 2 Jin. "The bear replied. The little monkey said, "If I take out 5 kilograms from two baskets, I will pay you 12 yuan, right?" "The bear nodded." Then I'll take it all. Since 5 kg is 12 yuan, 60 kg is 12× 12= 144 yuan, right? ""exactly, exactly. " Bear said. So the little monkey bought all the peaches, paid the money and left happily with the little rabbit. When I get home at night, the bear pays the bill, which is a loss anyway. The next day, the little monkey and the little rabbit found the little bear and told him the situation. They smiled and said, "It's all because you don't study well that we came to teach you a lesson." They replenished the little money to the bear. Bear hung his head in shame, and since then, he has been very serious in class every day. The three of them became good friends. One day, the Tang Priest told his disciples Wukong, Bajie and Friar Sand to go to Huaguoshan to pick peaches. Soon, the three disciples came back happily after picking peaches. Tang Priest and his disciples asked: How many peaches did each of you pick? Bajie said with a silly smile, Master, let me test you. Each of us took the same amount of money. There are less than 65,438+000 peaches in my basket. If we count three peaches, there are 1 peach left in the end. Do the math. How many did each of us choose? Friar Sand said mysteriously, Master, I will test you, too. If there are four peaches in my basket, there is 1 left in the end. Do the math. How many did each of us choose? Wukong smiled and said, Master, I'll test you, too. If there are five peaches in my basket, there will be 1 in the end. Do the math. How many shall we each choose? Tang Priest quickly said the number of peaches he had picked. Do you know how many peaches each of them picked? A young man came to see Mr. Liu and introduced himself: "My name is Yu Jiang. I'm taking a tour group to Hong Kong this time. I heard that your hotel has a comfortable environment and good service. We want to stay in your hotel. " Mr. Liu quickly said enthusiastically, "Welcome, welcome. I wonder how many people are there in your group? " "People, well, this is a big group. Mr. Liu said with surprise: it's great to have a big group and a big enterprise. As a tour guide, Yu Jiang saw Mr. Liu's mind. He said slowly, "Sir, if you can count the number of people in our group, we will stay in your hotel." "Please go ahead. "Mr. Liu said confidently." If I divide my group into four groups, one more person, and then each group is divided into four, there will be one more person, and then four groups are divided into four, there will be one more person, including me. How many people are there at least? " "How much is a * *?" Mr. Liu immediately thought of this. He must take over the business. "There is no specific figures, how to start? "He is a shrewd businessman and quickly replied," At least 85 people, right? " Mr. Yu Jiang said happily, "Eighty-five people, to be exact. Please tell me about your algorithm. " "The least number of people is the last quartile, and each is one person. It can be inferred that 1×4+ 1=5 (person) precedes the third quartile, and 5×4+ 1=2 1 (person) precedes the second quartile and the first quartile. "Well, we'll stay with you today." "How many men and women do you have?" "There are 55 men and 30 women." "We only have rooms for 1 1, rooms for 7 people and 5 people. How do you want to live? " "Of course, sir, you have arranged it, but men and women must be separated and there can be no empty beds." One more question. Mr. Liu has never met such a guest, so he has to spend more time. After thinking hard, he finally came up with the best plan: 1 1 two people, seven people in four rooms, five people in one room; One female room 1 1 person, seven people in two rooms, five people in one room, and one room * * *1/. After seeing his arrangement, Mr. Yu Jiang was very satisfied and immediately went through the accommodation formalities. Made a big deal. Although it is a bit complicated, Mr. Liu is still very happy in his heart. The Clever Boy Once upon a time, there was a king who often amused the ministers around him with difficult questions. If the ministers do it right, he will give them a little reward with a little kindness. If you can't answer, you will be punished or even beheaded. One day, the king pointed to a pond in the palace and asked, "I will give jewels to anyone who can tell how many buckets of water there are in the pond." If you can't say it, I will' reward' each of you with 50 whips. "Ministers were stumped by this sudden question. Just as the ministers were in confusion, a little boy came over to herd cattle. He asked what happened and said, "I want to meet this king." The ministers brought the little boy before the king. Seeing the little boy in front of him was black, thin and small, the king said doubtfully, "If you can't answer this question, you will be beheaded, you know?" Everyone present made a sweat for the little boy, but the little boy answered the king's question unhurriedly. In desperation, the king gave the little boy a gem award. Children, do you know what he answered? In fact, the king is a problem of insufficient conditions. It is impossible to find the right answer in normal thinking mode. The little boy just caught the key. He replied like this: "it depends on the size of the bucket: if the bucket is as big as the pond, it is a bucket of water;" "If the bucket is only half as big as the pond, there are two buckets of water; If the bucket is one-third the size of the pond, it is three buckets of water ... "The little boy actually broke the habitual thinking mode and analyzed the specific problems. How clever and flexible his mind is! Hope to adopt, thank you. Chen Jingrun, a famous mathematician triggered by a story, has made great contributions to overcoming Goldbach's conjecture. 1937, Chen Jingrun was admitted to Huaying College in Fuzhou. One day, Teacher Shen Yuan told a story about Bai in a math class: "A Frenchman discovered an interesting phenomenon 200 years ago: 6=3+3, 8=5+3, 10=5+5, 12=5+7, 28 = 5+233. The even number of each big du in 4 can be expressed as the sum of two odd numbers. Because this conclusion has not been proved, it is still a guess. " Chen Jingrun stared, absorbed. It is such a mathematical story that aroused Chen Jingrun's interest in Tao and his diligence, and made him a great mathematician. Once upon a time, there was an old man who was dying, and his three sons surrounded his bed. He said to his sons, "I have prepared seventeen horses for you, and I will give them to three people." When the horse was divided, the boss contributed the most, with half of it; The second child, one third; The third is the youngest, so you can take one ninth of the total. "After barely saying these words, the old man died. When the three brothers executed their wills, they agreed that these horses were their father's favorite things before his death, and they must never divide any of them into several pieces. But the will must be completely obeyed. What shall we do? It happened that their old uncle came on horseback. After listening to the story, he raised his eyebrows and said, "Let me share it. "You guess, the old uncle how to divide the horse? Because everyone wants an integer horse, according to the will, when dividing horses, the number of horses should be the common multiple of three denominators. The least common multiple of denominators 2, 3 and 9 is 18, so the total number of horses separated by horses should be a multiple of 18. The old man left his sons 17 horses, and the old uncle temporarily borrowed a horse he brought to make up the number. * * * There are 18 horses participating in the distribution. When it was ready, my uncle began to read and carry out the will: "... when the horses were divided, the boss made the greatest contribution, and got half ..." After reading this, my uncle counted nine horses for the boss to lead: the second one got a third of the total ... "After reading this, my uncle counted six horses and let the second one lead:" The third one is the smallest, and you are that one. After reading the last sentence, the old uncle counted two horses and asked the third one to take away: the sum of the horses given by the three younger generations happened to be left by his father 17: 9+6+2 = 17. There are 18 horses in the racecourse, and now there is only one left. Of course, my uncle borrowed it temporarily, and now it is still returned to its owner. Bajie ate 10 peaches.