Mathematical Diary Composition 400 words -Mathematics Diary Composition

Mathematical Diary Composition 400 words-Mathematical Diary Composition
In daily study, work, and life, everyone has the experience of writing composition. It is familiar to the composition. Application text and dissertation. So do you know how to write a good composition? The following is the 400 -word composition of the mathematical diary composition I compiled. I hope it will be helpful to everyone.

Chamming diary composition 400 words -Mathematical Diary Composition 1 is doing the seventh week of mathematics practice volume this morning, hey, interesting.
I I asked my grandfather to optimize the time before the pen. The teacher stipulated that it was completed in 70 minutes.
The calculation question I "唰唰唰" is done well. I hesitated the conceptual question: the cover of the mathematical textbook is about 54, -Fill the appropriate unit name in the brackets. It must be too small to fill in "square centimeters", and I immediately filled out "square meter". But is there such a big cover? It's not right to think about it. There is no such huge mathematical textbook. What should I do? I said, "Wait for the teacher to come down on Monday batch and talk." Let's talk about it. "
The question: a rope fold four times, and each of which is the rope? I just went to get the rope and folded it for a moment, and the grandfather said: "A folding once is one -half, one quarter twice, and three times?" Three times are one -eighth and one fourth is one -sixth. "There is another question: 6 pieces left in a box of cakes, three -quarters of the original. How many pieces of this box of cakes?
The at the beginning I was stunned, and then I thought about it. Then I was not smart enough to think about my little head! But this paper was completed within 60 minutes.
Chamming diary composition 400 words-Mathematical diary composition 2 Saturday afternoon, I finished my homework and was okay, my mother gave me a question: "Do you know what the characteristics of 2?" I heard it, I heard it, Answer all at once: they were all double. "What are the characteristics of this?" Mom asked again. "They are all 0, 2, 4, 6, and 8 in their bits." Mom said, "You are really amazing. Do you know the characteristics of the 4 of the 4?"
So I found some 4 times and found that they were all 0, 2, 4, 6, and 8 in their digits, so I told my mother this rule. But my mother said a number casually, and overturned my discovery. My mother asked me to continue to observe, but I couldn't find it when I looked left and right. My mother gave me a reminder: you can see the last two of these numbers. According to the prompt given to me by my mother, I observed these numbers on the right, and suddenly realized.
The characteristics of the multiple of 4 are: the last two digits of a number are 4 times, and this number is the multiple of 4. Then, I found some counts to try it, for example: 437, 37 divided by 4 = 9 ... 1, according to the rules, 437 is not a multiple of 4. Follow this characteristic. I found another number 1024, 24, divided by 4 = 6, and the law 1024 was a multiple of 4. I used the division to verify it again: 1024 divided by 4 = 256, so 1024 is a multiple of 4. I happily told my mother, and my mother nodded with satisfaction.
This is my discovery, and students may wish to try it.
Chamming diary composition 400 words -Mathematical Diary Composition 3 In this mid -term exam, Mathematics did not take a good test, only 86 points. After school, a thought in my mind must strengthen the study of the homework of mathematics.
How to work hard? Yes, do a few questions about the Olympic Morge of "Raising One Three" every night. Good idea, I want to tell this idea to my mother.
It returned home, I put the schoolbag- "Wow", which surprised me, but I was too late to sort it, and I told my mother the thoughts in my mind.
In after listening, my mother jumped happily from the ground and said, "Okay! Okay! But you have to do the quotient questions after completing your daily homework, so that you have time to do it. topic".
"Okay." I responded loudly.
This after dinner, after writing family homework, our family sat at the table to do the exercise question of "Against Three". We discuss well, who can get gift rewards.
haha, mother often did not get a gift, indicating that the mother did not do a right question. And my father and I have a "smart" mind, and I can often do three questions and get three gifts, indicating that we have progress.
The tests of mathematics again, I scored more than 90 points, I told my mother: Mom, this is because we practice all the best every day! Mom nodded happily. Since then, I have been more motivated to do Olympic!
I I think: Not only do you usually do a good job during the practice, but you must also take it seriously during the exam, so that you will improve once in the exam.
Mit the topics of the Olympic Mathematics every night and accumulate the experience of the topic. This is the golden key for me to learn mathematics.
Chamming diary composition 400 words-Mathematical Diary Composition 4 Today, our math assignment is to learn to write numbers 8, and the teacher put forward some requirements for us:
, "8" cannot be seal
. It is necessary to be neat and beautiful
The first "8" according to the teacher's requirements, but it is always not good. It is either hitting the wall or exception, let alone neatness and beauty.
I initiated my temper and told my mother that I couldn't write well. My mother said that I would not worry about it, and practiced it slowly. No children can write it all at once.
I said, "But Yan Ziqi, I wrote well, she learned with us!"
M mother said that Yan Ziqi must also write it through many practices.
It after listening to my mother, I started to write again. This time, it seems that it is not so difficult to draw red!
But after a while, I encountered a problem again, because the reddish redness must be written by myself. The grid is really small. This 8 twist again. I had to stop, found a blank piece of paper to practice on it, and practiced many 8 before I started writing on the book. I am still not very satisfied. I want to wipe off the rewriting. My mother comforts me and said that I want to practice slowly and it will be better and better!
that is the only one. After writing 2 lines and 8, my hand was sour and tired, and I couldn't write to my mother. The mother said don't write it. I will get it like this tomorrow!
I thought about it, there was no trap of the middle mother. After all, it was my homework. I couldn't hand it in tomorrow. The teacher criticized me that I was not a mother! I started to write down again, and the more I wrote the more smoothly. This time, I finally wrote all 8.
In after writing, I relieved deeply!
Chamming diary composition 400 words -Mathematical diary composition 5 Today we are taking comprehensive mathematics practice lessons. I heard that this lesson is very interesting.
The class, Teacher Jiang held a Libra in one hand and walked into the classroom with a bowl of rice in one hand. How many bowls are there? So many, how can you count it clearly? ... a series of questions hovering in my mind. Suddenly, there was a way to appear in my head: first count 50 meters from the bowl, use Libra to call its gram, and then call the grams of all rice. Then use the total quality to divide the quality of 50 meters to calculate how many 50 pieces can be calculated, and then you can calculate the number by 50. I use this method to calculate, there are 3,000. After a while, Teacher Jiang announced the answer, and it turned out to be about 3,000.
Next, Teacher Jiang demonstrated another method: how many meters of grams of grams were called first, and then the number of all rice grams was called, and the number of all rice was used to multiply how many grams. You can get a bowl of rice. The experimental results are the same as the teacher's previous announcement. Later, the teacher told us: "When using this method, the more quality is called, and the more calculated, the more correct this answer."
back home, I took out a small bowl of rice, because there is no scale at home, there is no scales, so there is no scales, so there is no scales, so there is no scales, so there is no scales, so there is no scales, so there is no scales, so there is no scales, so there is no scales. The method of the teacher. I divided the rice into 10 copies of the same size, counting one of them, 92, and 92 by 10 to get 920 meters.
This there are so many fun! Today's comprehensive mathematical practice class is really vivid and interesting.
Chamming diary composition 400 words -Mathematics diary composition 6 Today I went to the supermarket mother to buy me a suit and asked me how to pay. The clothes are 298 yuan, 20 % off, 98 yuan of pants, 10 % off, and 40 % discount on shoes?
clothes: 464.6 (dollars)
buy a piece of clothes, a pair of pants, a pair of shoes a total of 464.6 yuan
This dumplings
I eat 9 dumplings, and my mother eats dumplings for two times, and the dumplings that Dad eats are more than 4 times. My mother asked me: How many dumplings did Mom and Dad eat separately?
Moman dumplings: 9x2-2 = 16 (one)
dumplings that Dad eats: 9x2 4 = 22 (one)
In your mother to buy food:
To buy vegetables at 20 yuan, garlic 3.5 yuan per catty, green vegetables 2.5 yuan per catty, ribs of 14 yuan per catty. I bought 6 two garlic, a pound of green vegetables, and a pound of pork ribs. My mother asked me if I had enough money enough I calculated: 3.5 yuan per catty of garlic, one or two are 3 cents and 5 points, 6 or two are 2 yuan and 1 ak, green vegetables buy a pound of 2 yuan 5 cents, ribs 14 yuan, add up to 18 yuan 6 6 Angle, 20 yuan at 20 yuan 6 cents and 1 yuan and 4 cents.
It this morning Dad gave me 20 yuan to buy breakfast. Bid 1 yuan 5 cents and two buns, soy milk 1 yuan 5 cups and one cup. I bought 10 buns and 5 cups of soy milk. Dad asked me if it was enough, I calculated, 1.5 yuan two buns, four are three yuan, eight 6 yuan, ten is 7.5 yuan, soy milk 1 yuan 5 cups, two cups, 3 yuan is 3 yuan Four cups 6 yuan, five cups are 7 yuan pentagram, buns and soy milk have a total of 15 yuan. I told my dad to buy it, and there were five yuan left. My father said that the rest of the money gave me labor rewards. I am very happy.
Chamming diary composition 400 words -Mathematical diary composition 7 this year, I went to many places to pay the New Year. Although it was hard, there were still gains, and a total of 6,000 yuan was received. Although there are not many, this is the good opportunity to exercise my financial management, and use the knowledge in "Exploration of Wealth" and the accumulation of life to reasonably allocate money.
I discussed with my mother. If I can arrange the money reasonably, I will give me additional rewards. Listening to the aunt said that there was more interest on the interest of Jepao than to deposit banks, so I was excited and decided to take 5,000 yuan into Yu'ebao. The income of 10,000 yuan is 1.67 yuan per day, so my saving 5,000 yuan per day is basically around 0.8 yuan, and the income of 24 yuan a month! Calculate this, don't worry about pocket money every month!
Id the remaining money, 200 yuan for buying books and stationery, 300 yuan for daily necessities, and 500 yuan left. When I went to Nanjing to travel, I saw a lot of exquisite goods in the Nanjing Museum. I was excited. I bought a lot of it without thinking about it. As a result, I spent 109 yuan, but I was scared. What a shopping mad! It took 45 yuan to buy a box lunch on the train and 346 yuan left. How to use these 346 yuan? I thought hard to meditate and decided that 300 yuan for the usual extra expenditure, and 46 yuan was temporarily motionless.
Chamming diary composition 400 words-Mathematical diary composition 8 We finished the surface area and volume of the second unit cuboid and square. In order to allow us to understand the concept of volume deeper, we arranged a mathematical diary for us. Let us measure the volume of irregular objects.
In thought, I finally chose the volume of potatoes. My mother took me a potato and said, "There is no shape of the potatoes, how much is the volume?" I replied with a bamboo, "It's okay, I know what to do."
After measuring its length and width, the length is 24㎝, and the width is 17cm. Then I poured some water in the sink and measured the height of the water in the sink, 5cm high.
The next step was gently put into the sink. After the water surface was stable, I once again measured the height of the water in the sink, the water height was 5.5cm. The last step is to find the volume of potatoes.
The formula for the volume of potatoes:
24 × 17 × (5.5-5)
= 24 × 17 × 5
= 204 (cubic centimeter)
: The volume of potatoes is 204 cubic centimeters.
When I list the formula, my mother also realized. I did not expect that mathematics was so useful in daily life. This also reminds me of Cao Chong's allusion. So how does a large elephant call it weight? The clever Cao Chong thought of driving the elephant to a large boat, writing the scale on the boat, and then loading large and small stones on the boat one by one. When the scale just now, stop the stones and then measure the weight of the stone, and the weight of the stone is the weight of the elephant. Cao Chong is very clever and is the role model I learn.
Thising mathematics is really interesting. It ’s good to do mathematical experiments in person. It’ s really good to record the process of thinking about mathematical problems in mathematics diary. I want to write a math diary.
Chamming diary composition 400 words -Mathematical diary composition 9 Today, I went to the stationery store to buy stationery with my dad. As soon as I walked in, I saw a variety of stationery placed on the stand, and my eyes were looking at. I looked at so many stationery and thought: Where will I find the stationery? After thinking about it for a while, I rushed up to find it. I looked for it in the east, and almost searched my neighbors and the households, but I haven't found it yet.
Finally, the kung fu is not responsible for the person, and I finally found it. I found the stationery I was looking for on the right side of the toll table. It turns out that this is an eye -catching place. It is not easy to find it. I ran to the toll table with my beloved stationery and checked the aunt. However, unfortunately, the computer had a failure and could not calculate the aunt said anxiously: The computer was faulty, and my computing power was not good. What should I do? Intersection I moved my head and said, "Auntie let me come, my arithmetic is fast! The aunt listened and said: Then I will give you a unit price, you come to calculate. Gouquan pigment is 25 yuan a box, you bought two boxes. You bought 5 of the flour pigment pen, the unit price is 2 yuan. You bought one, 7 yuan. There is also a hook wire pen to buy one, 1 yuan. As soon as the aunt's words fell, I quickly calculated it, 25,
Later, I calculated the result, the result was 68 yuan. The aunt listened and said, "Children, it's right, then how did you calculate. I said excitedly: Because 25 × 2 can be made into a total of ten, 5 × 2 can also be made into a total of ten, adding these two total dozen numbers, and the price of book machines and hook lines It's right. The formula is: 25 × 2 5 × 2 {7 1} = 68 {meta}. The aunt heard: The children are really smart, and the math will definitely be good in the future.
This after this experience, I am more interested in my mystery of mathematics. Mathematics is really everywhere. As long as you observe it carefully, you will definitely discover the mystery of mathematics!
Chamming diary composition 400 words-Mathematical Diary Composition 10 In the homework of last night, there is a question: within a day, how many times can the hour and minute needle be over? I look at it. Two times, once at 12 noon, once at 12 pm, a total of twice.
Is when I took the clock in actual transfer, I found 23 times. It's weird, if it is once an hour, it should be 24 times. At two 12 hours, because it was not from 12 o'clock, but from 1, the hour hand coincided with the timing of the needle 11 times. Therefore, within a day, the time of the time and the closer is not 24 times, but 23 times.
Today, the teacher said that there was another new problem: if it did not start from 12 o'clock, it would only be 22 times, not 23 times. How is this possible? I never believe it!
Waiting for me to go home and try it, ah, it is right, it is really 23 times, but 22 times! What is going on? Start, and count from 1 o'clock, then 1 o'clock, 2:00, 3, 4, and 5, until 11:60, that is, 12 times, a total of 11 times. It is 22 times a day.
M mother said that from 12 o'clock to calculate the first re -coincidence, calculate the one after 12 hours, and then calculate the one after 24 hours. It is equivalent to we counting 3 o'clock a day, which is wrong. So within a day, the hour clockwise coincides with the minute hand 22 times.
Oh, it turned out to be the case!
Mathematical diary composition 400 words-Mathematics diary composition 11 is a bright star, dotted with a vast night sky; mathematics is the key to open knowledge, and mathematics is the door to knowledge; mathematics is the door to knowledge; mathematics is the door to knowledge; The fragrant flowers bring a charming aroma. I like a small fish, swim in the ocean of mathematics, I am mathematics, I love mathematics.
From the first grade to the sixth grade, we have many changes. From a small to a wise girl, we have become so smart and clever. The source of all knowledge is a person-. The first lesson in the morning is mathematics. Although my mathematics is not very good, when I still embrace each lesson. This lesson is different from the past. Teacher Fu asked us to use himself first, and then explain it by her. In the process of previewing "Ceremony Comparison", I encountered some trouble, but I remained patient, calm, and used our own intelligence to slowly think about it. The number in front of the number is called the previous paragraph, and the latter number is called the rear item. In the presence of the previous paragraph, the comparison item is the ratio. At the following, the teacher explained below. In order to detect our preview situation, Teacher Fu issued a question: it needs to be produced at 5,400 computers, and it is assigned to the three companies of A, B, and C at 1: 2: 3. How many computers should each company produce? I just previewed content, get up: I first seek the sum of the previous items of the ratio, and then use the total number of desks to remove the number of 900 units produced by Company A. The 1,800 units produced by Company B were finally used to use the number of companies in Company A to be equal to 2,700 units produced by Company C. In this way, a mathematical problem has been achieved.
The preview made me see my deficiencies and kept me a motivated heart. In short, there are countless benefits. I must adhere to this pre -class preview.
Chamming diary composition 400 words -Mathematical diary composition 12 followed, yesterday's strengthening training has ended, and today's strengthening training begins again! At 7 o'clock in the morning, my mother woke up from the dreams of sleepy eyes. I was confused and entered the babbon learning stage, mathematical diary composition. Immediately after yesterday’s knowledge solving knowledge, I saw that I had already mastered the eight or nine, so my mother formulated a new rule for me -within 8 hours, the application question of the one -dollar equation and the review of the two -yuan equation were completed —— God! With so many learning tasks, "Dashan" "Dashan", please "spare" me! I am only 11 years old, you can understand my young heart! But I dare not say that my mother said, just like a student is afraid of the teacher -although the teacher is our friend, but once the brother and friend launch a fire, it is not a "nose and swollen face"? I had to catch my hand ... At noon, I was massaging the fingers I had sore. Suddenly, a bite of meals came from the sky and fell from the sky. ! Dr., you would rather treat your stomach or not treat your mind! "I suddenly realized and ran to the dinner table to gobble! After dinner, my belly was talking again: "Master, don't you do so well! Eat such a support, you are torture me!" In the afternoon, I was in Xi. In the evening, I said to myself: " "Oh! Finally, this day!"
Chamming diary composition 400 words-Mathematical diary composition 13 save water. Everyone hangs on the mouth, but how many people do it?
The experiment today: Put the bowl under a drop of water. Within a minute, I counted it. The faucet drip 28 drops of water. How much can you save one hour? What about one day? 28 × 60 = 1680 ﹙﹚﹚, 1680 × 24 = 40320 ﹙﹚﹚ 2 2 2 2 2 2 2 2 2 calculated at 30 days a month and calculated at 12 months a year. , That is 40320 × 30 = 1209600 ﹙﹚﹚, 1209600 × 12 = 14515200 (drop), nearly one ton. Wow, it can save so much water a year!
Is when I saw such a large number, I was shocked. If each household saves so much drops of water every day, the amount of water is reduced, and the water cost will be reduced. Isn't this the beauty of both? However, if every household isted so many drops of water every day, can Grandpa Earth support it?
Water is not endless, and it is inexhaustible. In our daily life, due to the lack of water crisis and water -saving consciousness, the phenomenon of water resources can be seen everywhere. Looking at the "rushing" water resources, it is really regrettable.
It about saving water. There are many ways to save water, such as: rice water washing vegetables, watering flowers in fish tanks, and bathing water in the toilet ... Moreover, the rice washing vegetables can be well used to remove the remaining pesticides on the vegetables.
The water saving into the family, as long as you change the usual bad habits, you can save 70 % of water. There are many cases of waste of water in the family, such as: rinse the fragments with water in the toilet, and waste a lot of cold water in order to pick up a cup of hot water.
The protection of water resources, everyone is responsible!
Chamming diary composition 400 words -Mathematical Diary Composition 14 Today is a special day -the "Mathematics and Life" works organized by the Jiangning District Teaching and Research Office collected the awards conference. I am the first prize winner and I was invited to participate in the meeting. I was very excited!
The dad and my dad came to the scene of the awards conference on time -the concert hall of the Elementary School of Jiangning Branch in Nanshi. The hall is brilliant, with three or four hundred seats, and a large stage of nearly 100 square meters. The entire hall is very spectacular!
of course, the spectacular stage is indispensable for the wonderful performances of the students. What impressed me the most was Zhuxin's calculation. The teacher reported several additions and decreases. They immediately fiddled with the abacus of Zhuxin's abacus. Can't help but admire! This is nothing. The most exciting thing is that they do the topic of simulation of national competitions. The dense numbers are on the blackboard. My eyes are spent. I am about 40 questions, and most of them are divided. It is only 1 minute and 30 seconds, this is really so god!
The performance after watching some performances, finally awarded, first awarded the second prize. The prize is a soft noodle copy. The most important thing is to take a photo with the guests. I finally arrived, I was super excited, because I won the first prize, and I also got a fifth grade binding book for the Journal of Mathematics of Elementary School! I carefully read the words in the award:
"Chen Anqi:
The concentration of the work of the 20xx primary school student 'mathematics and life' in 20xx in Jiangning District, won the first prize.
, Encouragement. "
is very happy! With this encouragement, I will definitely work hard next time to win higher honors!
This well and mathematics, not afraid of walking all over the world! Let's experience the fun brought by mathematics in the math kingdom and explore the mystery of mathematics!
Chamming diary composition 400 words -Mathematical diary composition 15 Today is the first day of school. When we take mathematics lessons, we have learned the content of the first unit -negative number, and it is very simple.
It returned home, I picked up the content of the mathematics book. Suddenly, there was a quarrel from my ear ...
opened it to see, it turned out to be the positive and negative numbers. I asked puzzledly: "What are you making no more?" The positive number said, "Who is we talking about the most useful use!" "I want to know!" I said. The negative number said, "What do you think?" I supported it and said, "Actually, I don't know. Or, if we have a debate, I will be a referee!"
First of all, he said: "There are me everywhere in life, for example: supermarkets, schools, shopping malls ... Of course I am the most useful!" head. The negative number said: "That's not necessarily, for example: I must use me instead of you below 0 degrees!" The positive number was unhappy, saying, "Hum! People don't like you, I like me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see me, you see, see me, you see, see me, you see me. The money that loses money is represented by negative numbers, and the profit is positively expressed that people hate you most! "" What do you say! I am very useful, people can't do without me! "They are so noisy Don't let anyone.
"Don't make noisy!" After I finished the referee, they calmed down. I said, "After my careful thinking, it is decided to win the positive and negative numbers today!" "Both of you are very useful. No one can leave when people leave. Digital, you are closely linked, you should unite! "After listening to my words, they were ashamed. Since then, they have not quarreled and dedicated to humans.
Today, I learned new knowledge. I will continue to travel in the ocean of knowledge and get more treasures.

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