Yes, that's the attitude towards mathematics. I can see someone smiling with satisfaction after solving a math problem. I can also see that some people ignore the problem after seeing it, which is also a problem. The attitude of giving is really different. The reason why you don't like math is that you can't put the right attitude on math. I like math because it can exercise my thinking ability and logical way.
So my brain won't stagnate. I like the process of doing math problems. When you solve a math problem, the result is more perfect. So, students, please correct your attitude. I believe that from this attitude, you will be full of infinite mathematics.
After all, it is pure hand.
2. Write a composition with "My favorite math", thank you. Other subjects are also "my favorite math".
Today, Teacher Yuan talks about how to find the least common multiple. The teacher said, "If two books are prime numbers, their product is their least common multiple." I think: the number smaller than their product may also be their common multiple!
After class, I calculated several pairs of prime numbers with my exercise book, but their least common multiple is equal to their product. It's amazing! The truth of mathematics is amazing! I will study hard and master more skills.
My discovery
Students, have you made some casual discoveries in math study like me? Now I will introduce some of my findings.
If you want to calculate a multi-digit multiplied by 5, do you want to calculate it vertically? But I can do it with my mouth, because I found a little trick. Do you want to know? Let me tell you: calculate the product of 48532*5, first find this number 485320, and then divide it by 2. Can I take it orally? 242660 This is the product of 48532*5. Do you know why? I first expanded the original number by 10 times, and then reduced it by 2 times. Is it equivalent to expanding five times? Have you mastered this little trick?
I also found the same thing: multiplying a number by 1.5 only needs to add half to itself. (think about why? How about a number multiplied by 15? Use the method just now to add one more step-you have already thought of it, and then expand it by 10 times!
I also found a multi-digit, and the last two digits meet this requirement: ten digits are odd and one digit is 5. Multiplied by 5, the last two digits of the product must be 75. I think why is this? Because the unit of multiple digits is multiplied by 5 to get 25, the unit of product is 5, which is the tenth power of 2, and the odd number of ten is multiplied by 5 to get 15. This 5 must be added with the 5 to be written on the ten, so the product must be the tenth power of 7 and the tenth power of 5. In the same way, it is not difficult for you to deduce that a multi-digit number is even in ten digits and 5 in one digit. It is multiplied by 5, and the last two digits of the product must be 25.
Can this discovery be explained by an ingenious algorithm of multiplying numbers by 5 that I mentioned earlier? Think about it, they are the same, because after this number is expanded by 10 times, the last two digits are 50, and then divided by 2, there may be a remainder of 1 in the hundreds, and when combined with 50, 150÷2=75 is the last two digits, or there may be no/kloc-0 in the hundreds.
Students, is my little discovery insignificant? But I am very proud, this is the result of my own observation and thinking. Aren't great discoveries made up of these bits and pieces? Students, let's be a diligent thinker and discoverer!
3. Write a composition that I like math. In my opinion, 300 words of mathematics is a very interesting subject. Some people say that it's sad to see math, and they don't like it the most. I don't understand. The key point is the attitude of two words. Yes, that's the attitude towards mathematics. I can see someone smiling with satisfaction after solving a math problem. I can also see that some people ignore the problem after seeing it, which is also a problem. The attitude of giving is really different. The reason why you don't like math is that you can't put the right attitude on math.
I like math because it can exercise my thinking ability and logical way. So my brain won't stagnate. I like the process of doing math problems. When you solve a math problem, the result is more perfect.
So, students, please correct your attitude. I believe that from this attitude, you will be full of infinite mathematics.
After all, it's pure hand.
4. Composition: I like math. I like math. Do you know why I like math? Because of the charm of mathematics, it attracted me deeply.
I learned a new knowledge today, which is a simple addition and subtraction algorithm. After learning the simple addition and subtraction algorithm, my calculation speed is much faster and it is easier to learn to calculate.
Give an example! For example: 367 498=? I just have to think like this: add up 498 to make 500, and then use 367 500. I found that I added 2 more, so I subtracted 2 from the total to get 865. And what about 796 295? I think so: 796 can be counted as 800 plus, and 295 can be counted as 300. One adds 4 and the other adds 5, so the formula becomes 800 300-4-5= 109 1. Look, how convenient it is! After learning the simple algorithm of addition, learning the simple algorithm of subtraction will be much easier.
Such as: 483-299, hehe, you can find the way by gently moving your head. I'll take 299 and subtract it from 300, because it's 1, so just add 1 to the result, which is 483-300 1= 184, and the calculation is much simpler.
However, I can warn you: it's best not to think about the minuend when doing subtraction, or you'll be in trouble! Now, I like math more and more, because it makes me learn to calculate the results quickly, and math really makes me remember deeply.
My favorite math teacher, composition teacher, is an ordinary and extraordinary title.
Some people praise the teacher as the golden key, which opens the treasure house of knowledge for children; Some people praised the teacher as a spring rain, watering thousands of flowers and emitting gorgeous brilliance; Some people think that teachers are engineers who shape the human soul ... Ah! Aren't those cute little faces flowers cultivated by teachers? Isn't the correct answer the fruit watered by the teacher with sweat? For more than five years, I have been taught by four math teachers. Everyone likes it very much, but my favorite is Mr. Wei, who taught me in grade three. She is of medium height, round face and talking eyes.
It has been two years since she left us, but her kind face and kind voice have never left me. She speaks softly and dresses simply and neatly ... which left a deep impression on my young mind.
Whenever I encounter setbacks, I will think of her talking eyes, stare at me and encourage me. I remember there were three classes in grade three. Because I deserted, I was stood up and punished.
I was very unconvinced at that time. On impulse, I found reasons to talk back to Mr. Wei. He didn't criticize me much. After class, Mr Wei asked me to go to the office. When I think about it, I must criticize me.
I crept into the office and bowed my head to apologize to Mr. Wei: "I'm sorry, it's my fault." Teacher Wei hesitated and said kindly, "I won't criticize you severely this time, but I hope you will change it later."
I was very surprised. I nodded, I looked at Mr. Wei, Mr. Wei looked at me, and we all laughed.
Miss Wei, I like you. You shoulder the hope of the people and break your heart for us ... I will never forget you.
I hope my answer is helpful to you.
Some people like Chinese because she can communicate with others. Some people like sports because they can keep healthy. Some people like Sipin because she can tell us the truth of being a man. Some people like music because it can give us beautiful melodies ... If you ask me what I like, I like all of the above, but I like math best because it has many mysteries and is of great use in life. Believe it or not, I'll show you life. After the festival, people decorate roads with colorful flags, three of which are yellow, three are red and three are green, making dry roads elegant. There are many beautiful flowers in the square, a circle of red flowers, a circle of yellow flowers and a circle of green trees, which are very eye-catching. There are many such arrangements, and certain rules are used to make the landscape orderly and beautiful. Have you ever wondered why the manhole covers on the road are round? If it is made into a rectangle, the length and width of the rectangle are shorter than the diagonal, then if the lid leans down, it will fall into the sewer. The same is true of squares. And the diameter of the circle is equal, no matter how you put it, it won't fall off. Why do tree supports and roof beams make triangles, while clothes hangers and retractable doors make parallelograms? Think about it, if the tree's bracket is made into a rectangle, it will be easily deformed when the wind blows, and the triangle is very stable, so the beam should be made into a triangle. Clothes hangers and retractable doors are designed so that they can be opened and closed. Making them into parallelograms takes advantage of their easy deformation. Everyone has a love of beauty. My mother loves beauty very much. People always praise her exquisite clothes, which gives people a fresh feeling every day. Actually, I counted it for my mother. She doesn't have many new clothes, but she pays great attention to the matching of tops, trousers and skirts. Think about it, how many ways to wear three tops, three pants and three skirts? By the way, what about 27 kinds? Are you surprised? Take you to my house for a walk, with snow-white walls, neat floors and neat tiles. There are many math problems here! If you don't believe me, I'll give you some advice. How much paint should be used to paint the top and around the wall? How many square meters should I buy a two-room with floor? Two bathrooms are tiled, one is * * *, how many square meters, what size do you want to buy, about how many pieces? Our family spent a lot of time on decoration, busy measuring the length, width and height of the room, calculating the area, going to the market to investigate the price and buying various materials. The decoration master said that your family really knows how to calculate, and the materials are similar. Yes, I spent all my parents' hard-earned money. Try not to waste! Discover the mathematics in life with a pair of observing eyes, and you will feel that mathematics is no longer a boring subject. In my eyes, mathematics is beautiful, all kinds of figures are round or square, all kinds of buildings are angular, and all kinds of symmetrical figures make our visual feeling beautiful. In my eyes, mathematics is beautiful. The formulas for calculating the area and volume of graphs and various statistical graphs we have learned are simple and clear, but they contain profound truth and a lot of information, revealing beauty in simplicity. In my eyes, mathematics is beautiful. Look how many scientists each math problem attracts. They are tirelessly searching for truth in the ocean of mathematics. In my eyes, mathematics is beautiful because we can't live without it. Physicist Dirac said that God created the world with beautiful mathematics!