Interesting mathematical knowledge content

1. Little knowledge of interesting mathematics for first-year pupils (interesting math problems and answers for first-year students)

Little knowledge of interesting mathematics for primary school students in grade one (interesting mathematics problems and answers in grade one) 1. Interesting math problems and answers in senior one.

Interesting problems in primary school mathematics

1. Xiaohua's father can cut off five of his own nails in 1 minute. How many nails can he cut in five minutes? Xiaohua took 50 yuan's money to the store and bought a car worth 38 yuan, but the salesman only gave him 2 yuan money. Why? Xiaojun said: "I went fishing yesterday and caught a tailless fish, two headless fish and three half-baked fish." Guess how many fish I caught? " Students, guess how many fish Xiaojun caught?

4.6 horses and a cart ran six miles. How many miles did each horse run? How many miles did six horses run at a time?

5. A puppy tied to a tree trunk greedily eats a bone on the ground, but the rope is not long enough, which is 5 cm shorter. How do you teach dogs to scratch bones?

6. Wang walks from place A to place B. 1 minute later, Li walks from place B to place A. When Wang and Li meet on the road, who is farther from A?

7. The clock just struck 13. What should you do now?

8. On the vast grassland, there is a cow eating grass. This Niu Yi only ate half of the grass on the grassland in 2008. Q: How many years does it take to eat all the grass on the lawn?

9. Mom has seven pieces of candy. She wants to give them to the three children equally, but she doesn't want to cut the remaining candy. What should mom do? 10. There is a row of trees along the road in the park, and the distance between each tree is 3 meters. What is the distance between the first tree and the sixth tree?

1 1. Divide 8 in half, as shown below. How much is each half? The average score of arithmetic method is _ _ _ _ points, from which the horizontal score is _ _ _ _ points, and from which the vertical score is _ _ _ _ _ points.

12. A house has four corners, one corner has a cat, and there are three cats in front of each cat. How many cats are there in the room? 13. The house has four corners. There is a cat in a corner. There are four cats in front of each cat. How many cats are there in the room? 14. Xiaojun, Xiaohong and Xiaoping play chess. They always play three sets. Ask them how many games they played. (Every chess game is played by two people)

15. Xiaoming and Xiaohua each have a bag of sweets, but I don't know how many pieces there are in each bag. I only know that after Xiaoming gave Xiaohua 8 yuan, Xiaohua gave Xiaoming 14 yuan. At this time, the amount of sugar in their bags is exactly the same. Students, who do you think has more sugar? How much more?

Answer:

1.20, including fingernails and toenails.

2. Because he paid the salesman 40 yuan, he only gave him 2 yuan; 3.0, because the fish he caught does not exist; 4.6 Li, 36 Li;

Just teach the puppy to turn around and grab the bone with its hind feet.

6. They were in the same place when they met, so they were as far away from A; 7. This clock should be repaired;

8. It will never eat all the grass, because the grass will always grow; 9. Mom eats one piece first, and then gives two pieces to each child; 10. 15m； 1 1.4,0,3. 12.4; 13.5;

14.2 disk;

15. It turns out that there are many florets; 14-8=6 pieces, because the number of candy pieces given to two people is exactly the same, so it turns out that Xiaohua has more 12 pieces than Xiaoming.

2. Interesting math stories in the first grade of primary school

1. When does the snail climb the well? A snail accidentally fell into a dry well.

It lay at the bottom of the well and began to cry. A toad crawled over and whispered to the snail, "don't cry, little brother!" It's no use crying. The shaft wall is too high. If you fall here, you can only live here.

I have been here for many years, and I haven't seen the sun for a long time, let alone want to eat swan meat! The snail looked at the old and ugly toad and thought, "What a beautiful world outside the well! I can never live in a dark and cold well like it! " The snail said to the toad, "Uncle toad, I can't live here. I must climb up! " ! How deep is this well? ""Ha ha ha ..., are you kidding! The depth of this well is10m. How can you climb up with such a heavy shell at a young age? " "I am not afraid of suffering, not afraid of being tired. I can always climb out after a while every day! " The next day, the snail ate and drank enough and began to climb the wall. It kept climbing and finally climbed 5 meters at night.

The snail was very happy and thought, "At this rate, I can climb up tomorrow night." Thinking about it, it fell asleep unconsciously.

In the morning, the snail was awakened by a purr. At first glance, it turned out that Uncle Tu was still sleeping.

It was surprised: "How come I am so close to the bottom of the well?" It turned out that this snail slipped 4 meters from the borehole wall after falling asleep. The snail sighed, gritted his teeth and began to climb again.

At night, it climbed another 5 meters, but at night the snail slipped another 4 meters. Climb and climb, and finally the strong snail climbed up the well platform.

Can you guess how many days it will take a snail to climb the drilling platform? 2. Once upon a time, a man named Gu hired a long-term worker named Zach and promised to pay him a cow every year. By the end of the year, Guyimu said to Zach, I have your salary, and you can do great things in the future.

Honest Zach agreed. In a blink of an eye, 19 years passed, Zach was old and weak, and Mu Yi, the customer of the earth, wanted to dismiss him.

One day, Gu Yimu called Zach and said, "You worked in my house for 19 years. Here's 19 Jin of oil. Go! " Zach listened and said, "Sir, the salary you gave a cow every year has become a catty of oil!" " "Gu Muyi glared at him and growled," that's because you heard wrong. Will the master still depend on you? "I kicked him out of the house without saying anything. Zach was sitting on the side of the road with 19 Jin of oil.

At this time, I happened to see two generations of love riding a little donkey. Zach quickly told Avanti about it and asked him to help calculate the salary.

Afandi thought about it and said, OK, I'll go to Muyi's house with you to judge. "GuYiMu is drinking at home, suddenly two generations of love and zack came in. Gu Yimu was a little flustered and said with a smile: "Mr. Two generations of love have arrived. what can I do for you? "Afandi said," Zach wants to do some small business. He came to lend me three taels of silver and I'll guarantee it. I wonder if the master will agree. "

Listen to the gu, this just relieved, even said, "of course, Mr. Do the guarantor. Zach is an honest man, and the annual interest rate is good for this. "

So, the third officer wrote IOUs on six sides. Gu was about to get the money when he was grabbed by a hand and said, "It's fair to do things, and the money I lent you was good. Then, a pound of oil a year for two generations should be good for Ben. "

Gu rolled his eyes and wondered how much interest 19 kg of oil could bring him. It was a big deal. He said, "well, for the sake of two generations of Mr. Love, I will pay you the money you worked out." So, Avanti said with an abacus: the first year's salary 1 kg, the second year's interest 1 kg, the processing fee 1 kg, * * 3 kg, the third year's 7 kg, and the fourth year's 15 kg ... After a while, the result was worked out.

Finally, I begged again and again: "Mr. Ergeneration Love, please talk to Zach well, and I am willing to pay him 19 cows!" "Zach got the salary of 19 cows, and of course he didn't borrow three taels of silver. Excuse me, children, what is the principal and interest of the 19 account according to the algorithm of paying the principal and interest every year? 3, identify the direction, get up in the morning to face the sun, and think about it with your brain; 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, the first grade math interesting topic 1, black rabbit, rabbit rabbit, white rabbit three rabbits are racing. Black cotton said, "I'm not the fastest, but I'm faster than the white rabbit."

Please tell me, who runs fastest? Who runs the slowest? () runs the fastest and () runs the slowest. All three children are older than Fang.

According to the following three sentences, please guess who is the oldest? Who is the youngest? (1) Fangfang is 3 years older than Yang Yang; (2) Yanyan is younger than Fangfang 1 year; Yan Yan is two years older than Yang Yang. () Maximum value, () Minimum value.

3. Guess the ages of the three teachers according to the following three sentences. (1) Teacher Wang said, "I am younger than Miss Li."

(2) Teacher Zhang said, "I am older than Miss Wang." (3) Miss Li said, "I am younger than Miss Zhang."

The oldest is (), and the youngest is (). There are three classes in Guangming Kindergarten.

Please guess which class has the least number of students according to the following three sentences. Which class has the largest number of students? (1) The middle class is less than the small class; (2) There are fewer middle classes than large classes; (3) There are more large classes than small classes. The number of () is the least, and the number of () is the most.

All three students are taller than each other. A said: I am taller than B; B said: I am shorter than C; Suppose I am taller than A. ..

() the highest, () the shortest. 6. Four children are weighed.

A is heavier than B, B is lighter than C, C is heavier than A, and D is the heaviest. The weight order of these four children is: () > () & gt()& gt ().

Xiaoqing, Xiaohong, Xiaolin and Xiao Qiang are taller than others. Xiaoqing said I was taller than Xiaohong; Kobayashi said that Xiao Qiang is shorter than Xiaohong; Xiao Qiang said: Xiao Lin is shorter than me.

Please write down your names in descending order: (), (), (), (). 8. There are four wooden cases.

The blue box is bigger than the yellow box; The blue box is smaller than the black box; The black box is smaller than the red box. Please arrange these boxes in descending order.

Box (), box (), box (), box (). 9. Zhang, Huang and Li are the surnames of three children respectively.

Please guess the surnames of these three children according to the following three sentences. ( 1) A。

3. Interesting story about first-grade mathematics

1, the squirrel is going to spend the winter.

Winter is coming, and the little squirrel has to prepare food for the winter.

One day, the little squirrel came to the forest with a big bag on his back and said to Grandpa Pine, Would you please give me your pine cone? Grandpa Pine was generous and said: Pick as many as you want. The little squirrel is very happy. He picked it up and sang. Soon the bag will be full. Grandpa Pine asked: How many did you pick? The little squirrel said, Oh, I forgot! Grandpa Pine smiled and said, "I planted 16 pinecones, and there are nine more. If you can figure out how much you picked, I'll let you carry it. " The little pine tree is in a hurry and can't be counted. What shall we do? If Grandpa Pine won't let him take it away, what will he eat in winter? I will help it.

In math class, the teacher said: knowing the total number and finding the partial number is to remove the known partial number from the total number and get another partial number, which is calculated by subtraction. I soon figured it out that the little squirrel picked 16-9=7 (pieces).

Children, do you know the story of Gauss, a mathematical genius, when he was a child? When Gauss was in the second grade of primary school, once the teacher wanted to have a rest after teaching addition, so he asked the students to do some calculations. The topic is:1+2+3+4 ...+96+97+98+99+100 =? I thought the students would be quiet for a while, but I was about to find 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 100 to1; Line up in two rows and want to add, that is:1+2+3+4+………………+96+97+98+99+100+99+98+97+96+……+4+3+. 38+0+10 1+1+101* * has one hundred1kloc-0/,but the formula is repeated twice. 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.

3, chickens and rabbits in the same cage Have you ever heard of the problem of "chickens and rabbits in the same cage"? This question is one of the famous and interesting questions in ancient China. About 1500 years ago, this interesting question was recorded in Sun Tzu's calculation. The book describes it like this: "There are chickens and rabbits in the same cage today, with 35 heads on the top and 94 feet on the bottom. The geometry of chicken and rabbit? These four sentences mean: there are several chickens and rabbits in a cage, counting from the top, there are 35 heads; It's 94 feet from the bottom. How many chickens and rabbits are there in each cage? Can you answer this question? Do you want to know how to answer this question in Sunzi Suanjing? The answer is this: If you cut off the feet of every chicken and rabbit in half, then every chicken will become a "one-horned chicken" and every rabbit will become a "two-legged rabbit". In this way, the total number of feet of (1) chickens and rabbits changed from 94 to 47. (2) If there is a rabbit in the cage, the total number of feet is more than the total number of heads 1. So the difference between the total number of feet 47 and the total number of heads 35 is the number of rabbits, that is, 47-35= 12 (only). Obviously, the number of chickens is 35- 12=23. This idea is novel and strange, and its "foot-cutting method" has also amazed mathematicians at home and abroad. This way of thinking is called reduction. Reduction method means that when solving a problem, we do not directly analyze the problem first, but deform and transform the conditions or problems in the problem until it is finally classified as a solved problem.

4. 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 is 1 left in the end. Do the math. How many shall we each choose?

how much is it?

4. Find the interesting questions of the first grade math story in primary school and find the answers.

Interesting Mathematics in Grade One —— Tiger's Family Cognition Story

Hum is the same as how to calculate the proportion, but I don't quite understand it.

The tiger straightened up and said, "It's very simple. This square has 4*4= 16 squares. You can calculate the proportion by looking at how many squares black occupies. "

Hem cocked his head and asked, "Some black ones account for more than half a square, while others account for less than half a square. How can this be counted? "

The tiger said, "If the black one occupies half a square, it's a square. If it is not enough, it will be 0 square meters, which means it will not count! " "

"1,2,3 ... 1 1, and your black pattern accounts for11grid; 1、2、3…… 1 1,

Former family, relatives! Relatives, relatives, broken bones and tendons! "

Hem looked the tiger up and down and asked, "Well, the last time I saw you, you were quite stupid. How did you become so smart in a flash? "

The tiger said cheerfully, "What a coincidence!" "

"What is a clever lie?" Asked with a snort.

The tiger consciously made a slip of the tongue and quickly changed his mouth and said, "No, I'm getting smarter!" " "

"Smart so fast? No, I want to test you a question. " Hem said, "There are pheasants and rabbits in the big cage. There are 35 heads at the top and 94 feet at the bottom. How many pheasants and rabbits are there in the cage? "

The tiger immediately replied, "No!"

Hem frowned and asked, "What's the matter?"

The tiger said, "You told me to eat!"

Hum, stare and say, "This is an arithmetic problem. Stop eating! "

The tiger rolled his eyes and said, "Wait a minute, I'll find a quiet place to calculate." Then he disappeared into the jungle.

The tiger found the embarrassment and said, "Hum, test me, I won't." Then I said the topic again.

He gave a quick laugh and said, "This is the old problem of' chickens and rabbits in the same cage'. There is a ready-made formula: the number of rabbits =

12=23 (only). "

"There are 12 rabbits and 23 pheasants. I'll tell Little Pig. " The tiger turned his head and ran back.

5. 50 words in the first grade math story

1. Monkeys catch hats

A group of monkeys are playing by the well. A gust of wind blew a monkey's hat into the well. He called 18' s friends and fished for his hats one by one from the pine trees by the well. Four monkeys don't climb trees, so they go for hats. Q: How many monkeys got their hats from the well under the tree?

2. Short stories of "0" and "1"

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 fat' 0' 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? ""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' is nothing! ""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: "Stop arguing, both of you. Look at you, which number is greater than'1'and' 0'? " "This ..." The fat man "0" and the thin man "1" were speechless. At this time, "9" said quietly: "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.

3. The little squirrel is going to spend the winter.

Winter is coming, and the little squirrel has to prepare food for the winter. One day, the little squirrel came to the forest with a big bag on his back and said to Grandpa Pine, Would you please give me your pine cone? Grandpa Pine was generous and said: Pick as many as you want. The little squirrel is very happy. He picked it up and sang. Soon the bag will be full. Grandpa Pine asked: How many did you pick? The little squirrel said, Oh, I forgot! Grandpa Pine smiled and said, "I planted 16 pinecones, and there are nine more. If you can figure out how much you picked, I'll let you carry it. " The little pine tree is in a hurry and can't be counted. What shall we do? If Grandpa Pine won't let him take it away, what will he eat in winter? I will help it. In math class, the teacher said: knowing the total number and finding the partial number is to remove the known partial number from the total number and get another partial number, which is calculated by subtraction. I soon figured it out that the little squirrel picked 16-9=7 (pieces).

4. the story of avanti

On this day, two generations of love came back from outside riding his beloved little donkey. He saw two people standing in front of his house, one tall and one short.

"Two generations of love are back!" The tall man and the short man can't wait to see him, so that Afandi can find a way to give them the five coppers. Afandi smiled and said, "Ah, gentlemen, I don't know what happened yet. How can I help you? " The two talked for a while, and the two generations of love made things clear. It turns out that these two people cook together today. The tall man took out 200 grams of rice, and the short man took out 300 grams of rice. The meal was ready, and they were about to eat it when suddenly a passer-by came over and asked them to let three people eat the cooked meal. As a result, the three of them finished eating together. Passers-by thanked the tall man and the short man when they left, and left five coppers for the meal. But how can I give five coppers to two people? The short man said that he took three coppers when he gave 300 grams of rice, and the tall man took two coppers when he gave 200 grams of rice. But the tall man said that the five coppers were given to them by passers-by, and they should be divided equally, and each person should take two and a half coppers. When two people figure it out, they don't know how to figure it out

Two generations of love told the tall man and the short man, "This is very simple. In my opinion, it should be divided like this. " The two generations talked about his division of labor: the tall man got 1 copper coin, and the short man got 4 copper coins. The two were very surprised. Later, after two generations told the truth about the split, they were persuaded and left happily.

Children, do you know why two generations of love are divided like this? It turned out to be like this:

Because five coppers are one person's meal and three people eat it, the meal for three people should be 15 coppers. This meal used 500 grams of rice, so the price of 100 grams of rice should be 3 copper coins. The tall man gave 200 grams of rice, which is six copper coins according to the money. When having dinner together, he has to deduct 5 coppers for the meal, so he only deserves 1 coppers. The short man gave 300 grams of rice, which is 9 copper coins by money. He also had dinner together, so he should deduct five coppers from the meal, so he should get four coppers.

6. First-year mathematics hint knowledge

Mathematics in grade one is mainly addition and subtraction, so you can practice more.

First, pay attention to the lectures in class, review and accept a new knowledge in time after class, mainly in class, so pay attention to learning efficiency in class, find a suitable learning method, follow the teacher's ideas in class and think positively. Review in time after class, ask questions if you don't understand, remember what the teacher explained in class first when you do your homework, and also firmly grasp the formula and reasoning process, and try not to turn over the books.

Try to think for yourself, and don't look at the answer in a hurry. We should also summarize and review regularly and combine knowledge points to become our own knowledge system.

Second, do more questions and develop good problem-solving habits. If you want to learn math well, it is inevitable to do a lot of questions. Only by mastering various questions can you effectively improve your math scores. At first, we should focus on the exercises in books, lay a good foundation, and then gradually increase the difficulty, open up ideas and practice various types of problem-solving ideas. For error-prone questions, you should record them and contact them repeatedly.

When doing problems, we should develop good problem-solving habits and concentrate, so that we can get into the best state and form habits, so that we can use them freely in the exam. Third, adjust your mentality and treat the exam correctly. Most of the questions are basic, and only a few are difficult. Therefore, adjust your mentality, encourage yourself, think carefully when you do the questions, don't be impetuous, be prepared before the exam, do routine questions, and don't improve the speed of doing the questions in order to catch up with time. Do it in an orderly way.

7. Interesting story about first-grade mathematics.

1. The little squirrel is going to spend the winter.

Winter is coming, and the little squirrel has to prepare food for the winter.

One day, the little squirrel came to the forest with a big bag on his back and said to Grandpa Pine, Would you please give me your pine cone? Grandpa Pine was generous and said: Pick as many as you want. The little squirrel is very happy. He picked it up and sang. Soon the bag will be full. Grandpa Pine asked: How many did you pick? The little squirrel said, Oh, I forgot! Grandpa Pine smiled and said, "I planted 16 pinecones, and there are nine more. If you can figure out how much you picked, I'll let you carry it. " The little pine tree is in a hurry and can't be counted. What shall we do? If Grandpa Pine won't let him take it away, what will he eat in winter? I will help it.

In math class, the teacher said: knowing the total number and finding the partial number is to remove the known partial number from the total number and get another partial number, which is calculated by subtraction. I soon figured it out that the little squirrel picked 16-9=7 (pieces).

When Gauss was in the second grade of primary school, once the teacher wanted to have a rest after teaching addition, he asked the students to do some calculations. The topic is:1+2+3+4 ...+96+97+98+99+100 =? I thought the students would be quiet for a while, but I was about to find 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 100 to1; Line up in two rows and want to add, that is:1+2+3+4+………………+96+97+98+99+100+99+98+97+96+……+4+3+. 38+0+10 1+1+101* * has one hundred1kloc-0/,but the formula is repeated twice. 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.