Grandma wants to make a new quilt for Xiaoming. On Sunday, my mother took Xiaoming to the mall to buy clothes. The cloth was selected, and my mother asked the assistant aunt to tie it up for easy carrying. Unfortunately, the assistant aunt didn't find the rope. The assistant aunt asked Xiaoming to go to the service desk to find an uncle to get the rope.

Xiaoming trotted to the service desk. He said politely, "Hello, uncle! Please give me a 2 cm long rope, and I want to tie the cloth. "

Uncle was taken aback at first, and then smiled and said, "Little classmate, are you mistaken?" What can a 2 cm long rope bind? This is a 2 meter long rope! "After that, my uncle found a rope about 2 meters long and handed it to Xiao Ming.

Xiao Ming ran back shyly with a rope. He thought, yes! 2 cm is only two fingers wide, too short, 2 m =200 cm! No wonder uncle laughed at me!

Reading Enlightenment: Students, you can't be careless in math. When we know the unit of length, we should contact life, and never imagine it out of thin air. You see, Xiaoming makes such a big joke that we all don't want to learn from him!

The short story of mathematics (2) ... "Tiger roams the kingdom of mathematics (crossing the digital river skillfully)"

One day, Xiao Hu and Xiao Li went out to play together. They were walking when a river suddenly appeared in front of them. There is no bridge over the river. The tiger tried to swim, but when he ran to the river, he shouted in horror, "Xiao Li, there are crocodiles in the river!" " "

Careful Xiaoli found that there are many stones above the water in the river, but there is a strange phenomenon that every stone has a number on it.

The tiger walked forward regardless of the willy-nilly, and counted off as he walked: "1, 2, 3, 5, 8."

The tiger stopped suddenly and said, "There are some stones in front of 8. Which one should I take? "

Xiaoli reminded: "Tiger, be careful, don't walk around. I found that these figures seem to be regular! " "

So they stopped to study: 1, 2, 3, 5, 8, (? )、(? ) ....., Xiao Li: "What should be after 8?"

Xiaoli thought about it and said excitedly, "I know! You see, every number is the sum of the first two numbers, so 8 should be followed by 5+8 = 13. "

The tiger took the letter and said, "It's so easy! 13 should be followed by 2 1, and 2 1 should be followed by 34 ... "So they successfully crossed the digital river!

Reading Enlightenment: Mathematics is everywhere in nature. As long as we are good at observing, thinking more and thinking seriously, we can find that mathematics is really wonderful!

The Short Story of Mathematics (3) ... "The Election of the Kingdom of Mathematics"

On a sunny morning, these characters stretch, take a deep breath and start a new day of life.

Today is the day of democratic election. Numbers are arranged neatly, beating gongs and drums to create momentum. They want to choose the most unique and outstanding person to be the king of this digital kingdom.

The campaign manifesto began, with the number "0" at the top. I saw the round number "0" and climbed up the platform step by step. "The figures in the digital kingdom, you say, who is the most unique? It's me, the number 0. You see, my whole body is smooth and round. I am the foundation of all of you. As the saying goes, everything starts from scratch. No beginning, no result. So I am the most unique and excellent! Vote for me! "

Say that finish, 0 twisted body, the following "fans" enthusiastically shouted: "0! 0! 0! The most unique! 0! 0! 0! You are the best! "

The number "1" appeared in the fanatical shouts of 0 fans. I saw the slender 1 striding to the podium and bowed politely below. "Hello, everyone, all the characters, you see, how special I am. My figure is a role model for many people. Like the pillars of building a house and the trunk of a big tree, they all envy my figure and always imitate me. I am the best, too. I am the smallest natural number. Without 1, there is no 2. If we don't start from my foundation, there will be no world. So I am the most unique and excellent! Vote for me! "

After that, 1 waved his slender hands, and the fans in the audience were emotional and shouted: "1! 1! 1! The most unique! 1! 1! 1! You are the best! "

The number "2" moves like Donald Duck and walks to the podium. "Quiet, quiet!" I didn't expect so many fans in Digital Kingdom today, and the scene was really noisy. "I am the most popular number in the digital kingdom. You see, humans have left and right ears, left and right hands, left and right legs, all in pairs. Why? That's because you like me! With my number 2, the world is full of happiness! Whoever hugs me will be happy in pairs! So I am the most unique and popular! Vote for me, and I will definitely double everyone's happiness! "

The number "3" appeared, and immediately there was a commotion below, and the order began to be a little chaotic. Before "3" could speak, a reporter friend raised the microphone: "3, when did you become the most admired figure of mankind? Please tell me about your road to success. " "3. Excuse me, when did you become an auspicious symbol of mankind? Please tell me your trick. "

The dull "3" finally woke up: "Well, I don't know. I don't know what's good about myself. Why do people like me so much? " The number "3" continues, "Say that I am unique. I don't seem to be unique, because I look like half of the number 8. Say that I am the best, but my technology is not 1 or 2. " The following fans began to scream: "3 you are the most unique, because 8 is too perfect, we can't do it, we like your imperfection." You are the best, because you are 3, you will always have a goal, you can always make progress, and we will learn from you. "

Next, the numbers 4, 5, 6, 7, 8 and 9 appeared one after another. People from all walks of life published their own campaign manifestos, all of which were impassioned and the fans shouted enthusiastically.

After fierce competition, the Digital Kingdom held a referendum. In the end, the number "3" topped the list with as many as 5 1.9 million votes and was elected as the king of the Digital Kingdom.

Thus, the humble number "3" began his incredible career as a king.

Reading Inspiration: Students, why is "3" elected king in the digital kingdom? That's because the number "3" is modest and earnest, pays attention to learning the strengths of others, makes up for its own shortcomings, always has a goal to strive for and always demands its own progress, so it is chosen as the king in the digital kingdom. We should learn from the number "3" and be our best!

Math Story (4) ... Adventures of Math Island (Math in the Bakery)

Mark and Euler are good friends. They entered the math island together to experience life.

Gollum … Euler: What's that noise? Mark pointed to his stomach and smiled. "It gave me advice." After Mark said these things, Euler also felt a little hungry. Euler said: "I heard that eating at Math Island is free. Let's have a good meal today! " "

They went to several restaurants, but they were all kicked out because they couldn't answer the questions. Frustrated Euler said, "If I had known it was so difficult to survive on the Math Island, I wouldn't have come. I'm really looking forward to a carefree life at home! Why don't we go to the rescue station to have porridge? " Mark immediately objected, "that's where stupid people go." I won't go if I'm hungry! " Let's try somewhere else. "

"steamed stuffed bun! Just bake buns! " Mark: "Let's go to the steamed bun shop. Maybe the topic there will be a little easier! " "They soon came to the front of the steamed stuffed bun shop.

Look: Boy, this steamed bread steamer has eight layers, from top to bottom, one layer is bigger than the other. Euler said eagerly, "We want to eat steamed bread!" "The boss said," welcome! Welcome to visit! You two are the fourth batch of guests in the steamed stuffed bun shop today. The first group took half of all the steamed buns, and then each group took the remaining half. Now please calculate how many steamed buns you can take! "

Euler said happily, "Tell us a * *, how many buns are there?" The boss introduced the buns to them as if he didn't hear them: "I steamed two red bean paste buns in the first cage, six green vegetable buns in the second cage, radish buns in the third cage 10, the fourth cage, the fifth cage, the sixth cage and the seventh cage. I forgot that there were thirty steamed meat buns in the last cage. " After that, I stopped talking to them.

Euler said anxiously, "I don't know how many steamed buns there are, so how can I calculate how many steamed buns there are in a * * *"?

Careful Mark thought for a moment, smiled and said to the boss, "Then please bring us eight steamed buns!" " "

After hearing this, the boss immediately took out eight hot steamed buns and said with a smile, "Welcome to come again next time!" " "

Euler asked doubtfully, "He didn't tell us how many buns there are in a * * *. How did you work it out? "

Mark said with a smile: "When the boss introduced steamed buns, he actually told us that there were two steamed buns, six steamed buns, 10 steamed buns ... 30 steamed buns, and one * * * had eight layers of steamed buns, which has already told us the number of four layers. This is a problem that needs to be clarified. Think about the difference between four in each cage, and work out that a * * * has 65438+. The second group took 32, and there were 32 left. The third batch of people passed 16, and there is still 16 left. We took half of it, just eight loaves. "

Hungry, Euler gave a thumbs-up while eating steamed buns and praised: "You are great! Mark. "

Mark grabbed the steamed stuffed bun from Euler and said, "It seems that it is not very difficult to survive in Math Island!"

Reading Enlightenment: Doing mathematics requires not only a clever head, but also a meticulous heart. As long as we treat it attentively and use our brains, we will find that mathematics is not as difficult as we thought.

Math Story (5) ... "The adventure of a cool monkey (chasing sweet sand)"

Cool monkey, Shuai Shuai pig and sweet sand are best friends.

One day, Shuai Shuai Pig said to his good friend Cool Monkey, "Let's go and play racing. Xiangsha has already played there."

When they came to the racecourse, they saw sweet sand driving a racing car past them. The sharp-eyed cool monkey found that Xiangsha didn't wear a seat belt, and quickly said, "It's dangerous to drive a racing car without wearing a seat belt. I will catch up and remind her! "

After that, the cool monkey chased him in a racing car, but by this time, Xiangsha's racing car had gone. After a while, Shuang Monkey and Xiang Sha returned safely.

Shuai Shuai Pig asked the cool monkey, "How long did it take you to catch up with her?"

The cool monkey said, "I won't tell you the answer." Let's see if you can find the answer. Just now, Sweet Sand was driving a car with a speed of 280m/min, and I was driving a car with a speed of 350m/min. When I chased Xiangsha, she had been driving for 1.5 minutes. Do you know how long it took me to catch up with her? "

Shuai Shuai pig said to the cool monkey, "I beg you, you have to invite me!" "

The cool monkey said, "No problem, you answer."

I saw Shuai Shuai Pig slowly answer: "Xiangsha drives first 1.5 minutes, which is 280× 1.5=420 meters ahead of you, and 350-280=70 meters. Your car is 70 meters faster than Xiangsha's car every minute, so you need 420÷70=6 minutes to catch up. You said, am I right? "Shuai Shuai pig said proudly.

Cool monkey: "It's really hard to stop you. Today we will play the game of racing cats chasing mice! " It's my treat after the game! "

Cool monkey said, three good friends played games together.

Reading Enlightenment: To solve the problem, first find the method to solve the problem, then analyze the process, calculate step by step, divide the distance of catching up by the speed difference, and you can get the time needed for catching up!

Math Story (6) ... "Nezha Attacks the Crystal Palace (Guess Weapons)"

Nezha offended the Dragon King of the East China Sea, who threatened Nezha's father with a tsunami and asked Nezha to hand over his four weapons. For the safety of the villagers, Nezha's father can only give Nezha's treasures: "Gankun Circle, Mixed Tencel, Rocket Launcher and hot wheels" to the Dragon King of the East China Sea.

The Dragon King of the East China Sea invited the Dragon King of the South China Sea, the Dragon King of the West Sea and the Dragon King of the North Sea to look after these four treasures together, and told Nezha that if he wanted to get them back, he would have to go through various difficulties.

Nezha broke into the Crystal Palace alone in order to get back the treasure. This story happened during a treasure hunt.

Nezha bid farewell to his parents, adopted the "water avoidance method", swam to the Crystal Palace and came to the bottom of the sea. He saw a magnificent palace with a crystal card with three words "Crystal Palace" inlaid with pearls. Just as he was about to enter the palace, many soldiers and crabs suddenly jumped out from all directions, lined up, led by the sea patrol general "Hag".

I saw Hag holding a halberd gun and saying, "Nezha, where are you going?"

Nezha said, "I'm going to the Crystal Palace to get my treasure back."

Hag smiled and said, "If you want to enter the Crystal Palace, you have to pass my first pass, but today I don't have to test you by force. If you answer correctly, I will let you into the palace. " If you can't answer, you don't want to enter the palace. "

Nezha didn't want to fight him either, saying, "Good! You ask. "

Hag: "Now even I have 54 people in it. Everyone has weapons in his hand, arranged in order of halberd, axe, bow, knife, gun and sword. Tell me, what is the weapon in the last man's hand? "

Nezha couldn't see the weapon held by the last person in the queue. He thought for a moment and said, "Sword!"

Hag: "You can't see, how do you know?"

Nezha smiled and said, "I don't care. You have six kinds of weapons, arranged in the order of halberd, axe, bow, knife, gun and sword, because 54÷6=9, which means that you arrange them exactly nine times in the order of halberd, axe, bow, knife, gun and sword, and the last one must be a sword. "

Hearing this, the hag can only get out of the way and let Nezha enter the Crystal Palace.

Reading enlightenment: When encountering problems, we should keep a clear head, think carefully and find the right way, even the most difficult problems can be solved.

The seventh math story ... "Tiger roaming in the kingdom of mathematics (opening the door of the pagoda)"

Tiger and Xiao Li walked through the forest and came to the foot of the math tower. At sunset, the towering pagodas are particularly spectacular.

The tiger shouted excitedly, "You can go home now! Xiao Li, let's go to the pagoda to get the magic clock. "

But they walked around the pagoda for a week and didn't find the door to enter it.

Tiger: "Impossible. How do we get in? Please ask Grandpa Time to help us. "

Xiaohu repeatedly called "Grandpa Time!" Grandpa Time appeared in front of them and said happily, "You can't get into the pagoda, can you?"? Look! What have I brought you? "

Grandpa Time took out seven sapphires from his pocket, each with a number engraved on it.

Tiger: "grandpa time, your gift is too precious for us to accept." Please help us open the pagoda door! " "

Grandpa Time smiled and said, "This is not an ordinary gem, it is the key to open the math pagoda."

After that, I took them to a wall and saw seven holes in the wall, shaped like a flower.

Grandpa Time said, "When you put these seven gems into these seven holes, you must make the sum of the numbers on each straight line 2 1." After that, the gem was gone.

The tiger saw the seven gems written: 1, 3, 5, 7, 9,1,13, and asked, "Xiao Li, do you have any ideas?"

Xiaoli squatted on the ground, calculated on the ground with branches for a while and said, "There is a way!" " "Say that finish, he put seven gems into the hole as required, only to see the wall opened in front of him.

When brother and sister entered the pagoda, Tiger asked in surprise, "Xiao Li, how did you work it out?"

Xiaoli said, "Because1+3+5+7+9+1+13 = 49, there are three rows in the diagram, and the sum of the numbers in each row is 2 1, 21+. And 7+7 is exactly equal to 14, so the middle number must be 7, and then the remaining 6 numbers are divided into three groups, so the sum of each group is 14, plus the middle 7, which is equal to 2 1. "

Xiaohu and Xiaoli successfully got the magic clock and went home happily.

Reading inspiration: Why does Xiaoli always come up with a solution quickly when she encounters a problem? That's because she is calm, quick-thinking and pays attention to finding ways and means, so no matter how difficult the problem is, she can solve it. I must learn from Xiaoli!

Math Story (8) ... alien Kakashi (dad's problem)

On Sunday, A Xing's family went out for an outing on his father's motorcycle. In late spring, everything in the suburbs is full of vitality. A Xing is lying on the grass, too busy to take care of this beautiful spring, feeling distressed that he can't help Kakashi find energy. Dad's words made A Xing see hope again.

Dad checked the fuel tank and said, "You have to add gasoline when you go home, or you can't ride a motorcycle tomorrow."

A Xing said excitedly, "Dad, please give me some gasoline when I get home."

Dad flatly refused: "What does the child need gasoline for? You can neither eat nor play! "

A Xing can't tell the secret of the alien Kakashi, but can only say, "I want a small glass, and I have to do experiments with gasoline in science class." Dad just agreed.

As soon as I got home, my father took out a few bottles of gasoline to refuel the motorcycle. A xing is anxious to get it.

Dad changed his tune and said, "unless you can answer my question: my motorcycle is out of gas now." If I pour four bottles of gasoline, the weight of the car is 133 kg. If I pour seven bottles of gasoline, the weight of the car is 139 kg. Can you find out how many kilograms a motorcycle and a bottle of gasoline weigh respectively? "

A Xing thought for a moment and said, "This question is a bit difficult, Dad. I'll think it over before I answer you. "

A Xing calculated step by step with the deduction algorithm taught by the teacher at ordinary times, and finally worked it out. He happily told his father that each bottle of gasoline weighs 2 kg and the motorcycle weighs 125 kg! "

Dad praised happily: "A Xing has made great progress in mathematics during this period!" A Xing proudly said, "Of course, Kaka teaches me math every day!" " Dad: "When we bring Kakashi home, we should thank him!"! ""A Xing knew that he had let slip and was afraid to answer. He quickly poured some gasoline in the study and began to do experiments with Cacaci.

Reading Inspiration: Students, how did A Xing work out? Let me tell you: (139-133) ÷ (7-4) = 2kg, and then 133-2x4 = 125kg. It's easy to solve, I'm great! This is the way my mother taught me! I will get better and better in the future!

Math Story (9) ... "Math Planet (Math Tour Group)"

It has long been heard that the earth, which is 24 light years away from the mathematical planet, is a beautiful planet, and the mathematical tour group will take you there to visit and travel.

The guide of the math tour group was trying to buy a ticket, but he was stumped.

Originally, there was a sign in the ticket office, which read: each graphic elf 180 yuan, each digital elf 120 yuan, and each group of eight elves 150 yuan.

The math tour group has 30 graphic elves and 20 digital elves. How should they buy tickets correctly?

The clever digital wizard "28" thought for a moment and said confidently, "We should buy group tickets."

After listening to the digital elf "28", the tour guide bought tickets, and all the elves got on the spaceship and set off for the beautiful earth.

Precautions:

Light-year: a unit of length, used only in the universe.

Spacecraft: means of transportation (here refers to the superluminal spacecraft with the speed of 1 light-year/hour).

Reading Inspiration: Students, why does the digital wizard "28" say it is appropriate to buy group tickets? Let's see: the math tour group has 30 graphic elves and 20 digital elves. If the graphic guide buys tickets at 180 yuan, 180×30=5400 yuan, and the digital guide buys tickets at 120 yuan, 120×20=2400 yuan, and then 5400+2400=7800 yuan. If you buy a group ticket, each of the eight elves 150 yuan, that is 150×50=7500 yuan, as long as 7500 yuan. So it is more appropriate to buy a group ticket. The digital wizard "28" solved the problem easily with its intelligent brain, which is worth learning from all of us. Students, let's give full play to our wisdom and experience the fun of the mathematics kingdom!

A short story of mathematics (10) ... "Foer and the thief of mathematics (as a military adviser in Heifeng Village)"

Outside the math city, the math thief Kerry hid in the forest on the west side of the math kingdom, and he hated Foer. "Foer, I must take revenge!" "But how can Kerry, who has become a man's army, fight Foer? In desperation, Kerry decided to take refuge in the Lord one-eyed king of Heifeng Village, so Kerry dialed the telephone of one-eyed king. ...

Speaking of Heifeng Village, it is located in the west of the mathematics kingdom. The mountains overlap and the trees are lush here. There is only one Grand Canyon leading to neighboring countries, which is the only passage between the mathematical kingdom and its western neighbors. However, this important passage has been occupied by a group of unscrupulous robbers headed by the one-eyed king. He has ten generals, 108 warriors, all of whom are cruel.

When the one-eyed king heard that Kerry, a math thief who can pinch and calculate, came to see him, he personally went down the mountain to meet him.

Kerry, the math thief, was very grateful: "Brother, if you hadn't taken my brother in this time, my life would have been ruined by Foer!" " "

One-eyed king: "Bro, I will not only keep you this time, but also arrange an important position for you, that is, my strategist in Heifeng Village!" Except for me, you are the biggest in the village, and I will rely on your advice in the future! "

Kerry, a crafty old scoundrel, thought that someone in the one-eyed king's hand had a gun, and with Kerry's intelligence, he would surely defeat Foer!

To show his enthusiasm, the one-eyed king said to his opponent, "Let's get together and welcome strategist Kerry!" " Remember that every table at the banquet should have wine, meat and soup! "

The robber in Heifeng Village was unconvinced and thought: Why did a man's army become a strategist as soon as he arrived? Everyone wants to test him.

The chef in charge of cooking asked, "Strategist, plus you and the King, plus Heifeng Village has 120 brothers. How many bowls do I have to prepare according to one person's wine bowl, two people's meat bowl and three people's soup bowl? "

Kerry knows that everyone is testing his ability. If he doesn't show his real skills, he won't be able to convince the public in the future.

Kerry thought for a moment and said, "This question is too simple. If there are six people at a table, each table has six wine bowls, three meat bowls and two soup bowls, and each table is 1 1 bowl, while 120 people ÷6 people =20 (table). * * Can be divided into 20 tables.

At this time, another robber asked, "strategist, I heard that you stole gold bars and seized arms in the mathematics kingdom." Why don't you take some mountains to commemorate our king? "

There was silence, and everyone wanted to hear Kerry's explanation.

Kerry said with a wry smile, "It's all my incompetence. If it is the brothers in Heifeng Village, my action will be successful! "

Kerry's answer made the robbers in Heifeng Village feel sweet, and he had no problem with his election as a military adviser.

Reading Enlightenment: In real life, don't be afraid of mathematics, but be confident, observe carefully, think carefully and fully understand, so that you will be handy when doing problems and enjoy them more and more. We will confidently find ourselves really great! Kerry won the recognition of the robbers with his confidence and wisdom. But the math thief Kerry is a big bad guy! We should only learn from his wisdom, not his evil deeds!