Mathematics composition for sixth grade primary school

In daily study, work and life, everyone will inevitably come into contact with compositions. Compositions can be divided into primary school compositions, middle school compositions, and college compositions (essays). Do you always have trouble starting a sentence when writing an essay? Below are the sixth-grade mathematics compositions I collected for everyone. They are for reference only. Let’s take a look. Sixth grade primary school mathematics composition 1

Recently, everyone has learned how to calculate the volume and surface area of ??cylinders and cones. I studied the knowledge in class well and did some extracurricular training to consolidate the knowledge I learned. Based on the comprehensive study and training situation, I summarized and summarized the relevant knowledge. There are mainly six aspects to do well in this aspect:

First, the test paper. Just roll a rectangular piece of paper into a cylinder shape, and then calculate the volume of the cylinder. For example: a rectangle with a length of 12.56 meters and a width of 9.42 meters is rolled into a cylinder. The overlapping part is ignored. Find the volume of the cylinder. There are two possibilities for this kind of question, using the length as a circle or the width as a circle. Therefore, calculate both possibilities and compare them. What should be noted in this kind of question is: you need to understand that the length and width of the rectangle are rolled into a circle.

The second is to turn. It is to rotate a rectangular piece of paper 3600 along one side and find the volume or area of ??the resulting shape. For example: If a rectangle is 8 cm long and 5 cm wide, rotate it once with the length as the axis, and calculate the volume of the shape. The shape obtained by rotating a rectangular piece of paper is a cylinder, and then using the formula for calculating the volume of a cylinder, the answer can be obtained. For this kind of question, you should pay attention to what shape of paper is used to rotate.

The third is cutting. It is an object of a shape. Eliminate some parts according to certain rules and calculate the volume or surface area of ??the remaining shape. What should be noted in this kind of question is: you must calculate all the possibilities, and you cannot be lazy and only calculate one type.

The fourth is casting. It is to melt an object of one shape into a liquid and then recast it into an object of another shape. This kind of question should focus on the analysis that although the shape changes, the volume does not.

The fifth is increase. Just add another shape to one shape. For this kind of question, you should pay attention to what kind of shape is added.

Sixth is cutting. It means cutting a shape into several sections, and then telling you what is added and how much, and asking you to calculate the principle. This kind of question depends on understanding how it is cut, what changes will occur in the future after cutting, and how the area will increase. ,etc.

The above is my summary and consideration of recent learning content. Do you think mathematics is very mysterious and full of fun? Mathematics composition for sixth grade primary school 2

Recently, we have just learned the common sense of multiplication and division of fractions and "unit 1" online, and I am very interested in it. No, I have recently encountered a daily substantive problem.

One day, Yifen’s parents were busy, so they sent me to my aunt’s house to do my homework. Suddenly, my aunt, who was concentrating on stock trading in front of the computer, shouted: "Great, I've made money back again!" I couldn't help being startled, so I leaned over and asked her: "What's so exciting?" She said: "The stock that my aunt bought with a unit price of 12.5 yuan fell by 6% yesterday and rose by 6% today. It seems that my opinion is right!" After hearing this, I always felt that it was not that easy, so I immediately took out my pen. The first "falling by 6%" means that the original price of 12.5 is regarded as unit one, and it has fallen by 6%, which is 3/50, so the price at this time is 12.5-12.5×3/50=12.5-0.75=11.75 yuan , and then rises back to 6%, then which unit is it at this time? It should be the current 11.75, so the current price formula is 11.75+11.75×3/50=11.75+0.705=12.455 yuan, which is 0.045 less than the original price of 12.5 Yuan, it can be seen that because the "unit 1" is different, the number obtained is also different.

Then the question comes, if it first rises by 6% and then falls by 6%, will it be profitable? You can also try it and regard the original price of 12.5 yuan as "unit 1". At this time, the unit price is 12.5+12.5×3/50=13.25 yuan. The corresponding drop is 6% of 13.25. The current price should be 13.25-13.25×3/50=12.455 yuan, which is also a loss. It seems that whether it falls first and then rises, or it rises first I will always lose a little bit more than the original price!

I immediately told my aunt about this conclusion and asked her to be careful when buying and selling stocks. She was very happy and even praised me as a child who is good at thinking.

Mathematics knowledge is hidden everywhere in our daily life. As long as we have a pair of eyes that are good at observing things, we can discover many mysteries hidden in it! Mathematics composition for sixth grade primary school 3

From the beginning From grade 1 to grade 6, there are countless teachers who have taught our class. In addition to our head teacher, the other person who left a deep impression on me was the math teacher.

The math teacher is also named Shen. He is of medium height, with a trace of silver hair showing through his sparse black hair. Under his thick eyebrows is a pair of deep eyes, which reflect an elusive light of wisdom. He always had a smile on his face and seemed amiable. Once, I finished my homework quickly and was at the front of the homework queue.

Mathematics teacher Shen took my homework book, frowned, glanced at me, and gave it back to me. I took the book in confusion, and my heart skipped a beat. It was covered with big red*. I returned to my seat and started revising, but I couldn't figure out the answer. Teacher Shen called me to him and asked me sternly: "How did you do this homework? You were so wrong!" Then he taught me earnestly and used a red pen to draw out the places where I made mistakes, "You said , Should these questions be wrong? "My face is hot, because I have made some low-level mistakes, and I can't wait to find a crack in the ground to get through. I understood, but there were two beads of sweat on the teacher's cheek.

Teacher Shen always teaches us kindly when we make mistakes in our homework. But when we are not serious in class, are distracted or whispering to each other, we are always extremely angry. I still remember that when Teacher Shen first came to teach us, a classmate probably wanted to challenge Teacher Shen’s tolerance limit. . So when Teacher Shen was in class, he read comic books privately under the table. His lowered head seemed out of place with everyone else's high-spirited appearance. Teacher Shen, a sharp-eyed math teacher, quickly discovered this anomaly. Teacher Shen walked up to him and said jokingly, "Hey, what book do you read so enthusiastically?" Teacher Shen snatched the book from his hand and held his ears with his hands. He tilted his head. With his head standing up and his face as red as a ripe red apple, Teacher Shen sternly warned him that he must be serious in class and not be distracted. This killing will serve as a warning to others, so that we will never dare to be careless in class again.

This weird-tempered teacher is sometimes amiable and sometimes extremely stern. But this teacher left us an eternal memory and left a bittersweet taste in our lives. We like this teacher from the bottom of our hearts and hope that he can accompany us through the last time at our alma mater. Sixth Grade Primary School Mathematics Composition 4

My mathematics teacher, Teacher Zhu, is about 1.65 meters tall, about 30 years old, with shiny black hair tied in a ponytail. With two big clairvoyance eyes and a pair of ears on her round smiling face, you can't do anything in class, but she is a very interesting teacher.

The reason why Teacher Zhu is interesting is that she can arouse our interest in learning at any time during class, making us learn easily and happily.

One day, the water supply was cut off in the school, and the students had no water to drink, and they all looked listless during math class. Teacher Zhu came up with a clever idea and asked a classmate to tell a joke, which made us laugh. We were suddenly refreshed, the learning atmosphere in class became more active, and the number of students who raised their hands to answer questions increased significantly.

In order to increase our interest in learning, Teacher Zhu also adopted a star-based reward method.

Once, Teacher Zhu saw that we were doing our math homework carelessly and not taking it seriously. He said with a smile: Now as long as you get an A+ or a five-pointed star in class or homework, it counts as a red star. As long as five red stars are collected, Teacher Zhu will award a candy. Although a candy is very small, it is the teacher's little hope. In subsequent assignments, more and more students got A+ and five-pointed stars. In the blink of an eye, we entered the final review stage again. Teacher Zhu found that our results in the test were not very satisfactory. Teacher Zhu came up with a new idea and said to us: Now, if you get 98 points, you will be rewarded with one lollipop, and if you get 100 points, you will get two lollipops. At this time, our enthusiasm for learning soared and our grades improved rapidly. Encouraged by this measure, I got a lot of lollipops and my grades improved a lot. I achieved excellent results in the final exam.

Although I know that studying is not to get candy from the teacher, the results we achieved in fun learning are sweeter than eating lollipops. I like such a fun teacher! Sixth Grade Primary School Mathematics Composition 5

Today my parents and I came back from Ningbo. There was nothing at home, and the shops outside were not open. My father had no choice but to take my mother and me to Carrefour for shopping.

When I got to the door, I took a cart. The first place everyone visited was the third floor, where books are sold. I chose a book. At this time, the salesperson came over and said to me: " Due to the big marketing, this book is currently only 12 yuan, and the original price is 20 yuan." I listened to my aunt and said to my father: "It is a very good deal to buy this book at the moment. The original price is only 20 yuan. It costs 12 yuan, which is a 40% discount!" My father looked at it and said, "Very good. Now I know how to buy the same thing at a lower price, and I also know how much discount to get based on the original price and current price. Very good, there is progress! ”

After everyone bought the books, they went to the second floor. I first looked at the price tags of the items and then started to pick things. Milk was 45 yuan per box, oranges were 4 yuan per catty, and pistachios were 49 yuan per catty. , also on sale, I got some of each. I showed the oranges I picked to my aunt and weighed them. They were 15 yuan per piece, and I also bought pistachios for 30 yuan.

When we came to the meat section, my father bought beef and shrimp. After weighing them, they were 50 yuan and 30 yuan respectively. Then he bought some vegetables. I saw that the vegetables were so affordable, and they only cost 5 yuan. Money can only buy so much. In addition, my mother also picked some things, and bought dumplings and glutinous rice balls. I saw that there were many kinds of dumplings, and different brands had different prices.

My mother told me that when shopping, I should choose economical and cheap things so as not to waste money.

After my parents and I bought things, we came to the checkout counter. Auntie scanned everything on the computer, and the amount appeared on the display. In the end, it was 180 yuan per pound.

I am very happy today. I bought so many things that I like to eat. I am so happy. Moreover, I also know how to use money reasonably and not waste it. Sixth Grade Primary School Mathematics Composition 6

Our math teacher has short, black hair. He always has a straight face. I never see him showing a smile. It makes people feel cold and ruthless, and they dare not approach him. . Every time he comes to teach us, he always teaches us with a serious face, which looks very scary.

A few minutes before the math class, Yang Zhangyu and Yang Zhouze from our class would "show off" outside the classroom. As soon as they saw Teacher Zhang coming towards our class, they ran back to the classroom and shouted loudly : "Teacher Zhang is here! Teacher Zhang is here!" We all rushed to our seats as fast as possible, regardless of whether we wanted to go to the toilet or drink water just now. The students in the front row rushed back to their thrones at extreme speeds without any hesitation. Teacher Zhang appeared at the door of the classroom. We felt a wave of cold air coming towards us. We quickly sat up straight and held our breath. The classmates who were accustomed to letting him check their homework in advance quickly ran to him and lined up neatly. As long as someone fails to do their homework, he will give you a meal of "fried meat on bamboo boards". The taste is so hot that most people can't resist it, and many people often burst into tears.

Every time we attend his class, we all sit very upright. Once we slip away and are caught by him, the consequences can be imagined. His angry look gave us goosebumps.

Even though he was very cruel to us, he gave us very little homework. Sometimes, he will explain some more profound mathematical knowledge to us so that we can understand the content of the upper grades, so everyone is full of daydreams about higher-level mathematical knowledge...

Shh, he Coming! The students immediately sat upright in their seats again. A serious face appeared in front of the classroom again... Mathematics composition for sixth grade primary school 7

Mathematics is an extremely wonderful subject. Although it is complex and cumbersome, it perfectly combines graphics and numbers. Be intoxicated by it. The difficulty is the gymnastics of our minds, the boat that allows us to reach the other side of success.

In today’s math class, the teacher explained the question on page 28 of the math book. At first glance, this question looks like a monk who is a bit confused - but if you think about it deeply, grasp the details and find a breakthrough point, the ideas for solving the problem will appear. Everyone knows the bottom radius of the round steel. It is written later that the round steel is pulled out of the water surface by 8cm, and the water surface is lowered by 4cm. In this way, everyone can immediately think that the volume pulled out is equal to the volume of the water surface dropped, so that the water surface drop can be calculated. The volume is divided by the height 4cm to calculate the bottom area of ??the pool. As mentioned earlier, the water surface rose by 9cm after the round steel was put in. The rising volume is the volume of the round steel. The answer can be solved by multiplying the bottom area by 9. The students were able to answer this question, and the teacher was very happy. But some students have other methods. A classmate thought that every time the round steel is pulled out 2cm, the water surface will drop by 1cm. I summarized his words in mathematical expressions: the moving distance of the round steel: the moving distance of the water surface = 2:1. In this way, if the water surface rises by 9cm, it means that the cylinder has been lowered by 18cm, and the height is also 18cm. In this way, the volume of the round steel can be directly calculated by multiplying the base area by the height. After listening to everyone's answers, the teacher said that everyone was amazing.

Although the difficult questions in mathematics are very difficult, as long as everyone can connect them with the common sense they have learned, they will find that mathematics is endless fun. Mathematics composition for sixth grade primary school 8

Mathematics and Life Li Ruiqi, Class 6 (4), Xiaolingwei Central Primary School Before, I always thought mathematics was a boring thing, but that incident changed my view of mathematics. view. It was this summer. One day, when the weather was hot, my father brought back a big round watermelon after get off work. Looking at the beautiful black and green stripes, I almost salivated, so I volunteered to cut the watermelon.

I was about to cut it, "Slow down..." Dad said, "I'm going to test you. There are two ways: first, you eat a quarter of the watermelon; second, this I will eat one-third of the watermelon, mom will eat one-fourth, and give one-fifth to your little cousin, and the rest will be given to you. Which one do you choose?” I didn’t even think about it when I heard one-fifth? I thought and said loudly: "I choose the second option!" Dad smiled and said: "Think about it carefully." I thought about it carefully, isn't this just asking for the smallest common divisor, one-third, one-quarter The least common divisor of one-fifth is 60. One-third plus one-quarter plus one-fifth equals 47/60, which means I can only eat the remaining 10/60. Three, and one-quarter is equal to fifteen-sixtieths, so of course you should choose the first option!

So I said to my father with some embarrassment, I didn’t think carefully about it just now, but now I know I should choose the first option.

"Haha, it doesn't matter. Just think about it clearly. Come on, cut the watermelon. It's fair to everyone. Each person gets a quarter!" I clicked the knife twice, and the big watermelon split into four petals, revealing its red flesh. I took a bite. , this melon is so sweet! After this incident, I understand more and more that mathematics is really closely related to our lives! Mathematics composition for sixth grade primary school 9

The New Year’s Day holiday is over. My short holiday has been enriched by the public short-term training class. I have learned a lot in the mathematics class here. Knowledge.

First of all, we have learned about stroke problems and fraction and fraction word problems. Let’s start with a concentration problem:

Add 50 grams of sugar to sugar water with a concentration of 20%, and the concentration becomes 40%. , how much water is added to make the sugar water concentration 25%?

I was confused as soon as I saw this question. I read it three times and had no clue. Teacher Wang seemed to see through our minds and began to explain in a guided manner: "Students, don't limit your thinking. For arithmetic, try making an equation! ”

Oh! Why didn't I think of making equations? Okay, listen carefully, the teacher is starting to teach! The teacher wrote this equation on the blackboard:

Solution: Suppose there are x grams of sugar water with a concentration of 20%.

20%x+50=（x+50）40%

0.2x+50=0.4x+20

50-20=0.4x- 0.2x

30=0.2x

gram, then the following is much better!

The sugar water with a concentration of 40% contains sugar (1550) × 40% = 80 grams of sugar. According to the question, we can understand that to become a sugar water with a concentration of 25%, water needs to be added. Sugar is an "invariant", so sugar water with a concentration of 25% has 800÷25%=320 grams. At this time, we know that 320-200=120 grams of water have been added.

This is the secret of mathematics! A seemingly clueless question was solved with only a few calculation formulas, and the doubts in our hearts were solved layer by layer. How miraculous! After studying in this short-term training class, I have a deeper understanding of fractions and hundreds of fractions problems. Those concentration problems that were once a feast for me have now become a piece of cake. I am not only fascinated by these mathematical mysteries. And marvel. Mathematics composition for sixth grade primary school 10

We must see everything clearly and not be confused by it. Otherwise, you will be left with regrets. No, I just regret it once.

My math scores are pretty good. I can consistently rank among the top three in the class every time (almost always with a score of 90 or above), and the teacher doesn’t have to worry about my grades at all. If nothing unexpected happens (I’m not sloppy), I can set a new record in mathematics. But it was such honors that made me gradually forget about myself. I became arrogant and lighthearted.

It was another math test. I glanced at the test paper with confidence and started to answer the questions confidently. I fantasized about my excellent grades and the praise from my math teacher, the envious eyes of my classmates and the encouraging eyes of my parents, and I couldn't help but laugh. The invigilator gave me a sharp look, which made me calm down a little. I continued to do the questions absentmindedly, and after handing in the paper, I was still living in my own world. I also asked myself, should I check it again? Oh, forget it, it’s time consuming. The last glimmer of hope was shattered by my sense of vanity.

I waited proudly for the teacher to hand out the papers. When the paper was handed to me, I was shocked: 77 points! ! ! Is this still me? Regret, sadness, collapse. All kinds of emotions came to my mind. how so? Why is this so? They all took so many exams, but I did.

After I calmed down, I began to reflect on my mistakes and concluded the following points: 1. Don’t be fooled by some complimentary language; 2. Be open-minded and don’t be affected by some negative factors in the exam. ; 3. After completing the test paper, be sure to check it several times to minimize the chance of something slipping through the net.

Oh, I regret it so much.