What are the math stories in the second grade of primary school?

1. Write a short story about mathematics in the second grade of primary school. Urgent! !

About years ago, European mathematicians did not know how to use "0". They use Roman numerals. Roman numerals are symbols representing numbers, which are combined to represent different numbers according to certain rules. When using this number, the number "0" is not needed.

At that time, a scholar of the Roman Empire discovered the symbol "0" from Indian notation. He found it very convenient to use "0" for mathematical operation, and he was very happy. He also introduced the Indian method of "0" to everyone. After a while, it was known by the pope at that time. At that time, it was the Middle Ages in Europe. The power of the church was very strong, and the power of the pope far exceeded that of the emperor. The Pope was very angry. He rebuked that the sacred number was created by God, and there was no such monster as "0" in the number created by God. Anyone who wants to introduce now is blasphemous! So the Pope ordered the scholar to be arrested and tortured, and his ten fingers were tightly clamped with a clamp, so that his hand was disabled and he could no longer write with a pen. In this way, "0" was banned by the ignorant and cruel Pope.

However, although the use of "0" is forbidden, Roman mathematicians still use "0" secretly in mathematical research regardless of the ban, and still make a lot of mathematical contributions with "0". Later, "0" was finally widely used in Europe, but Roman numerals were gradually eliminated.

Children, do you know the story of Gauss, a mathematical genius, when he was a child?

When Gauss was in elementary school, once after the teacher taught addition, because the teacher wanted to have a rest, he came up with a topic for students to calculate. The theme is:

1+2+3+ .....+97+98+99+ 100 = ?

The teacher is thinking, now the children must start class! I used this as an excuse to go out, but Gauss stopped me! ! It turns out that Gauss has worked it out. Little friend, do you know how he did it?

Gauss told everyone how he worked it out: add 1 to 100, and add 100 to 1, adding two lines, that is:

1+2+3+4+ .....+96+97+98+99+ 100

100+99+98+97+96+ .....+4+3+2+ 1

= 10 1+ 10 1+ 10 1+ .....+ 10 1+ 10 1+ 10 1+ 10 1

* * * There are one hundred sums 10 1, but the formula is repeated twice, so the answer is equal to < 5050 & gt.

Since then, the learning process of Gauss Elementary School has already surpassed other students, which laid the foundation for his future mathematics and made him a mathematical genius!

In daily life, mathematics is everywhere, such as: buying and selling vegetables, calculating how much …

The following is a short story, a story between numbers.

One day, when the digital cards were having lunch together, the youngest one spoke.

Brother 0 said, "Let's take some photos together. What do you think? "

0' s brothers and sisters said in unison, "Good."

Brother 8 said, "Brother 0' s idea is really good. I will be a good person once. Shall I provide camera and film for Brother 8? "

Old 4 said, "Brother 8, it's good, but it's a little too much trouble. Better use my digital camera. That's settled. "

So, they got busy. Finally, they took pictures for them and immediately sent the digital camera to the print shop. The computer sister tried to ask them for money, but who paid for it? They stared at each other one after another. This is what the computer sister said, "A ***5 yuan, a * * * eleven brothers and sisters, how much does one person pay on average?"

Do you know how to solve it?

Tang Priest and his disciples picked peaches.

One day, the Tang Priest told his disciples Wukong, Bajie and Friar Sand to go to Huaguoshan to pick peaches. Before long, the three disciples returned 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?

how much is it?

2. The second grade composition "The Story of Mathematics"

I have a good friend. His name is Math. Now let me tell you an old story about "Mathematics". Math is a lovely girl. She is very caring and often helps you solve some difficult problems in life. She is a little shy, too. Only if you are sincere to her will you get something in return. I have another math secret to tell you. When I was X years old, I got to know math in X. At first, she and I were not good friends, and she often rewarded me with "low marks". Later, I took math seriously, and the relationship between math and me became better and better. Now, math and I have become inseparable friends. Do you like this lovely "math"? Let's make friends with math!

3. Interesting math stories in the second grade of primary school

Distinguish between southeast and northwest

Get up in the morning and face the sun. Think with your head.

The front is east, the back is west, the left is north and the right is south;

Reach out your right hand and remember the prisons in the southeast and northwest;

Specify the orientation of the map, with north at the top and south at the bottom;

Left is west, right is east, children should distinguish.

4. Math Story of Grade Two in Primary School

The story of 0

In the mysterious kingdom of mathematics, two "secondary numbers", namely "0" of the fat man and "1" of the thin man, often argue endlessly about who is important. Look! Today, these two little enemies meet in a narrow way, and they have launched another war of words.

The thin man "1" spoke first: "Hum! Fat' 0', what's so great about you? Just like 100, what's the use of you two being fat without my thin'1'?"

Fat man "0" is not convinced: "Don't be overbearing in front of me. Think about it. Without me, where can you find other figures to make up 100? "

"hey!" "1" is not to be outdone. "If you are arrogant again, you are nothing. Look! 1+0' is not equal to myself. What's your use? "

"Let's go! The result of'1× 0' is not me, and your'1'is also useless! " "0" is tit for tat.

"You ..." "1"paused and improvised. "Anyway, your' 0' doesn't mean anything!"

"This is your lack of knowledge." "0" said unhurriedly, "You see, in daily life, the temperature is 0 degrees. Is there no temperature? For another example, without my starting point on the ruler, how can there be'1'?"

"No matter how you compare, you can only do the middle number or mantissa, such as 1037, 1307, and you can never lead." 1 "said confidently. Hearing this, "0" said more confidently: "This may be, for example, 0. 1, what can you do without my" 0 "to occupy it?"

Seeing the fat man "0" and the thin man "1" all blushed, and no one would let anyone, and other people watching were very anxious. At this time, "9" had a brainwave and made a gesture of pause: "You two stop arguing. Look at you, which size is bigger than me? " "This ..." The fat man "0" and the thin man "1" were speechless. At this time, "9" said calmly: "1" and "0". In fact, as long as you stand together, aren't you older than me? "1" and "0" looked at each other, and it took a long time to scratch their heads and laugh. " That's right! The power of unity is the most important! ""No.9 "said earnestly.

Fast calculation of small star "5"

In the exhibition center of electronic calculators in Mathematics City, sales staff skillfully operate various electronic calculators and calculate various problems. The audience gave a burst of admiration from time to time, how fast and accurate it was. Many primary school students in the crowd are holding their parents and clamoring to buy electronic calculators. With it, it is great to do math problems!

"no!" Suddenly, a strange dwarf jumped on the counter and shook his hand and said to the pupils, "children shouldn't use such things." They should cultivate their own computing ability and learn simple algorithms from an early age. " With a good algorithm, it is sometimes faster than a calculator. "

Everyone focused on the dwarf, and when they looked carefully, it turned out to be a small "5" nicknamed "Banzi".

"What? Can you calculate faster than my calculator? " The salesman asked strangely. Little "5" said, "Don't believe me, let's try." At some point, the little "5" said to everyone: "You can just quote a number and multiply it by 5. Salesman, please use the electronic calculator to calculate and see who is faster? "

"good!" Everybody shout together. Someone in the audience reported the formula "246×5" first.

1230 "small" 5 "blurted out.

"3 14×5、289×5……"

"1570, 1445 ..." Small "5" reported at one breath.

Before the salesman could finish the operation, the number was told by a small "5"

"good!" Everyone applauded warmly. Little "5" smiled and said, "This is called" plus zero to fold in half ",because 5 is half of 10, and a number is multiplied by 5. Expand this number by 10 times and then fold it in half. For example, 246× 5 = 2460 ÷ 2 = 1230. "

"Let's compare it again." The salesman said unconvinced.

"Well, let's calculate the square of any two-digit number whose last digit is 5." Small "5" said.

"equal to 3025." Small "5" is really fast, and it was reported at once.

At this time, even the salesman admired Xiao "5"' s articulate speech. Small "5" said: "Any last digit is the square of two digits of 5. Just multiply its ten digits by a larger number 1, and then add 25 after the product, and the result is obtained. For example, 752=5625, and 56 is the product of 7 and 8.

"Haha, this is very fast."

"Half, really smart, dare to compare skills with calculators; The method is wonderful, fast and accurate, and it is the big star of Mathematics City. " I don't know who made up some jingles and made everyone laugh.

Tang Priest and his disciples picked peaches.

One day, the Tang Priest told his disciples Wukong, Bajie and Friar Sand to go to Huaguoshan to pick peaches. Before long, the three disciples returned 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?

how much is it?

The story of gauss

Gauss has many interesting stories, and the first-hand information of these stories often comes from Gauss himself, because he always likes to talk about his childhood in his later years. We may doubt the truth of these stories, but many people have confirmed what he said.

Gauss's father works as a foreman in a tile factory. He always pays his workers every Saturday. When Gauss was three years old in the summer, when he was about to get paid, Little Gauss stood up and said, "Dad, you are mistaken." Then he said another number. It turned out that three-year-old Gao Si was lying on the floor, secretly following his father to calculate who to pay. The results of recalculation proved that little Gauss was right, which made the adults standing there dumbfounded.

Gauss often joked that he had learned to calculate before he learned to speak, and often said that he learned to read by himself only after consulting adults about the pronunciation of letters.

At the age of seven, Goss entered St. Catherine's Primary School. When I was about ten years old, my teacher had a difficult problem in arithmetic class: "Write down the integers from 1 to 100 and add them up! Whenever there is an exam, they have this habit: the first person who finishes it puts the slate face down on the teacher's desk, and the second person puts the slate on the first slate, thus falling one by one. Of course, this question is not difficult for people who have studied arithmetic progression, but these children are just beginning to learn arithmetic! The teacher thinks he can have a rest. But he was wrong, because in less than a few seconds, Gauss had put the slate on the lecture table and said, "Here's the answer! Other students added up the numbers one by one, sweating on their foreheads, but Gauss sat quietly, ignoring the contemptuous and suspicious eyes cast by the teacher. After the exam, the teacher checked the slate one by one. Most of them were wrong, so the students were whipped. Finally, Gauss's slate was turned over and there was only one number on it: 5050 (needless to say, this is the correct answer. The teacher was taken aback, and Gauss explained how he found the answer:1+100 =1,2+99 =10/,3+98 =/kloc-. A * * * has 50 pairs, and the sum is 10 1, so the answer is 50 × 10 1 = 5050. It can be seen that Gauss found the symmetry of arithmetic progression, and then put the numbers together in pairs, just like the general arithmetic progression summation process.

The story of flowers

For an internationally famous China, a woman once went to buy cotton. Hua is solving a math problem. How much does the lady say it costs to pack cotton? However, diligent Hua didn't hear it, so she answered the calculated answer. The woman screamed, "Why is it so expensive?" At this time, Hua knew that someone was coming to buy cotton and said the price. The woman bought a bag of cotton and left. When Hua was about to sit down and continue to calculate, he found that the toilet paper that had just been calculated was taken away by the woman. This time, Hua was anxious to catch up desperately. A master Huang Bao met Professor Hua, a modern mathematician in China who enjoys a high reputation in the world.

I let him take the bus (because they knew each other) and finally caught up with him. Hua said shyly, "Aunt, please … please give me back the toilet paper." The woman said angrily, "I paid for it, but it wasn't from you." Hua was in a hurry and said, "How about this! I paid for it. " When Hua reached for the money, the woman seemed to be moved by the child! He not only asked for money, but also returned the toilet paper to Hua. At this time, HuaCai slightly relieved, after returning home, he calculated again. ...

5. Math stories suitable for junior two students.

Mathematical genius gauss

1960 1777 On April 30th, Gauss was born in a peasant family in Germany. When I was a child, Gauss liked math very much. When learning English, Gauss Chang Quan often lies in the yard and counts chickens. When he was a little older, he followed his neighbor's children to do math problems, which were fast and accurate every time. After school, Gauss is particularly interested in mathematics. But math teachers look down on rural children and often make things difficult for students. Once, the teacher asked them to sum from 1 to 100, stipulating that they were not allowed to go home for dinner unless they could do it. The children began to calculate at once. But there are too many figures. If you do the math, you will be wrong if you are not careful. Just as everyone was in a hurry, Gauss stood up and reported, "Teacher, I did it." When reading the novel, the teacher said without looking up, "You must be wrong. Recalculate. " But Gauss was so confident that he took the answer sheet to the teacher to show him. Suddenly, the teacher's eyes widened. 5050! The answer is correct! The teacher asked him in surprise what method he used. Gauss said with confidence: "1+100 =10/,2+99= 10 1, 3+98 =1kloc. Teacher, do you think I did the right thing? " The teacher was ashamed. Since then, he has devoted himself to teaching and even tutored Gauss more carefully. Gauss studies very hard. Later, he made great achievements in mathematics. At the same time, he also made outstanding contributions in astronomy, electromagnetism, geodesy and other scientific fields.

6. Ask the math story of the second grade of primary school for competition.

Today is Saturday, 10, 15. My father and I went shopping in South Street.

At 8 o'clock in the morning, we arrived at Neinan Street by bus. There happened to be a grandfather Rong by the platform, and there was a talking scale next to him.

Seeing me coming, grandpa smiled and said, "Little friend, do you weigh yourself?" ?

I asked a little curiously, "How much does it cost to weigh it once?"

Grandpa replied cheerfully: "You can only weigh 1 yuan at a time, and you can also measure your birth height!"

I thought to myself: this is really killing two birds with one stone!

So I stood firm on the scale. Grandpa turned on the switch and only felt something soft touch my head. Then, a small rectangular note is printed on the machine, which reads: "Weight: 27.0 kg, height 132.5 cm"! This half year is 4 cm taller, but what about the weight?

At this time, I remembered that the math teacher said that "kilogram" has another name called "kilogram". I didn't expect to meet you today, and I know that I have gained 2 kilograms!

I was so happy on the way back! I must exercise my body!

7. 20-word math story in grade two of primary school

When Gauss was in elementary school, once after the teacher taught addition, because the teacher wanted to have a rest, he came up with a topic for students to calculate. The theme is:

1+2+3+

.....

+97+98+99+ 100

=

?

The teacher is thinking, now the children must start class! I was about to go out as an excuse, but I was

Gauss, stop! !

It turns out that Gauss has worked it out. Little friend, do you know how he did it?

Gauss told everyone how he calculated: put

1 plus

Until/very

100

and

100

increase

1

Add them to two lines, that is:

1+2+3+4+

.....

+96+97+98+99+ 100

100+99+98+97+96+

.....

+4+3+2+ 1

= 10 1+ 10 1+ 10 1+

.....

+ 10 1+ 10 1+ 10 1+ 10 1

* * * 10 1 has one hundred sums, but the formula is repeated twice, so add10/00.

Be divided by ...

2, the answer is equal to

& lt5050 >；

Since then, the learning process of Gauss Elementary School has already surpassed other students, which laid the foundation for his future mathematics and made him a mathematical genius!

You can concentrate it yourself

8. I need 10 second-grade math stories.

1, mirror problem

Pleasant goat and boiling goat see a mirror hanging on the tree. In the mirror, the wolf points to a clock, and the time on the clock is 50. Cang Lang said, "Do you know the real time? If you don't know how to do it, you are an idiot. If you know how to do it, you sheep are still idiots! "

Boiling sheep thought for a long time and said, "Isn't the time seen in the mirror 10: 50?" Pleasant Goat said, "The object seen in the mirror is opposite to the actual object." Boiling sheep said, "Could it be 2: 20?" Pleasant Goat said, "No, the actual time and the time in the mirror add up to 12." Boiling sheep also began to understand, saying, "I see, the actual time is 1: 00 10."

2, a few corners

Pleasant Goat and Boiling Goat walked for one kilometer and reached the way down the mountain. They saw three equilateral triangles drawn on another piece of paper without crossing. How many angles are there and how many right angles are there? Then the boiling sheep said, "It's not easy." Pleasant Goat said, "Every triangle has three angles, and three triangles make up 339, with nine angles. An equilateral triangle has no right angle. "

3. Multiplication formula

Pleasant Goat and Boiling Goat walked another kilometer. They see a piece of paper that says, "When you see this paper, you should have a good sleep, because this is the last time you sleep.". What is 45 times 1 1? " Boiling sheep said, "It's not easy! First calculate 45* 10 equals 450, and then add 45, which equals 495! " Then Pleasant Goat said, "There is another simple way. 4+5 equals 9. If you put 9 between 4 and 5, it becomes 495! "

4. How long is the rope?

Summer came, and my parents took Xiao Cong to the mall to buy air conditioners. The air conditioner has been selected, and Dad asked the salesman to tie it up. Unfortunately, the salesman has no rope. Xiao Cong volunteered to go to the reception desk to get the rope.

Xiao Cong trotted to the service desk. He said politely, "Hello, uncle! Please give me a 2 cm long rope, I want to tie the air conditioner. " Uncle was taken aback at first, and then smiled and said, are you mistaken? What can a 2 cm long rope bind? This is a 2 meter long rope! "Xiaocong shyly took the rope and ran back. He thought: Yes! 2 cm is only two fingers wide, too short, 2 m =200 cm! No wonder uncle laughed at me!

Son, 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, Xiao Cong made such a big joke because of this. Don't be like him!

Steps 5 and 2 apply the problem.

Pleasant Goat and Boiling Goat just walked one kilometer when they saw a piece of paper on the tree next to a TV set. Gray Wolf gradually appeared on the TV. Big Wolf said, "Seeing you here means that you have passed the first level. However, that question is so simple that even primary school students can do it. You won't know the second question. " Boiling sheep was angered: "We can definitely do it, Big Wolf, we'll see!" " "The big wolf said," Ha ha ha ha, a little more anger, that would be fun! " "

Pleasant Goat and Boiling Goat saw the paper saying, "The white rabbit picked 60 mushrooms, and now there are only 48 left. How many days will it take to finish them? " Pleasant goat and boiling goat said, "What's the problem? It still lacks one condition! " "Pleasant goat said," let's look for clues. "After careful observation, Pleasant Goat and Boiling Goat found that on the back of the paper, this is a two-step application problem. They said, "The white rabbit has picked 60 mushrooms, and it eats 6 every day. Now there are only 48 mushrooms left, and the rest will be eaten in only 8 days. "