Handwritten newspaper about decimals.
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Elementary school mathematics decimal handwritten report 1: Properties of decimals
Properties of decimals: add zero or remove zero at the end of the decimal The size of the decimal constant.
The movement of the decimal point position causes changes in the size of the decimal:
1. If the decimal point moves one place to the right, the original number will be expanded 10 times; if the decimal point moves two places to the right, the original number will The number will be expanded 100 times; if the decimal point is moved three places to the right, the original number will be expanded 1000 times...
2. If the decimal point is moved one place to the left, the original number will be reduced 10 times; if the decimal point is moved left If you move the decimal point three digits to the left, the original number will be reduced 100 times. Fill the bits with "0".
If you are satisfied, please adopt the handwritten newspaper on the meaning of decimals
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If you put an inconspicuous decimal point in the middle of "123", it will become " 1.23" or "12.3". If you add an inconspicuous decimal point to "456", it will become "4.56" or "45.6"... The decimal point is such a magical symbol, it can make all numbers become "tiny"! In the seventh unit, we learned the multiplication and division of decimals, which impressed me a lot! The first point: When arranging vertical expressions, the digits must be aligned. When doing vertical column multiplication, many students often mistakenly think that integers are aligned with integers, and decimals are aligned with decimals. If they do that - a big mistake! The correct method should be like this: No matter where the decimal point is, When arranging vertical expressions, be sure to align the ends of the two numbers. Only then can the calculated results and answers be correct! Second point: Never click on the decimal point during the process of arranging vertical expressions. This is a common problem among many students. If you click on the decimal point during the exam, points will be deducted, and you will regret it!
Point: Be careful. When multiplying a decimal by 10, 100, 1000... or dividing a decimal by 10, 100, 1000... the position and direction of the movement of the decimal point must not be mistaken! Let us study mathematics seriously and devote ourselves to it! There are other things in the kingdom of decimals Many secrets are waiting for us to explore! When Yu Ruotong talked about decimals, the students all found it difficult. After learning the addition and subtraction of decimals, we stepped into the learning hall of multiplication and division of decimals, which gave us a new understanding of decimals. To learn decimals, let us first understand a few rules: (1) When an integer is multiplied by a decimal below 1, the quotient becomes smaller and smaller, rather than larger and larger; (2) When a number is multiplied by 0.1, the product is reduced by 10 times, the product multiplied by 0.01 will be reduced by 100 times, and so on; (3) Do not rush to put the decimal point in the process of decimal division. After the quotient is out, choose the appropriate position to put the decimal point; (4) A number (except 0) Divided by 0.5, the quotient is twice this number.
If you are satisfied, please adopt the origin of decimals (copied into the handwritten newspaper)
In the 3rd century AD, more than 1,600 years ago, the great Chinese mathematician Liu Hui proposed the idea of ??decimals .
Initially, people only used words to express decimals. It was not until the 13th century that some people used one lower space, such as 8.23, where the left part represents the integer part and the lower right part represents the decimal part.
In ancient times, some people used to circle the numbers in the decimal part when recording decimals. For example, 1.5 is recorded as 1⑤. Such a circle separates the integer part and the decimal part. This notation later spread to Central Asia and Europe.
In 1427 AD, the Central Asian mathematician Al. Cassie also created a new decimal notation. He used a method of separating the integer part and the decimal part to record decimals. For example, 3.14 is recorded as 3 14.
It was not until the 16th century that Europeans paid attention to the role of decimals. In Europe, some people recorded decimals like this, for example, 3.1415 was recorded as 3⊙1①4④1①5⑤. ⊙ can be regarded as the demarcation mark of the integer part. The numbers in the circle represent the order of digits. This notation is very interesting, but very troublesome.
Until 1592 AD, the Swiss mathematician Blinky made great improvements in the representation of decimals. He used a small circle to separate the integer part from the decimal part, for example: 5.24 ...the small circle in the number actually acts as a decimal point.
Some time later, the German mathematician Kravis replaced the small circles with small black dots. Therefore, the way of writing decimals has become our current representation method.
However, there are different methods for expressing decimals in different countries. Now, there are two ways to write the decimal point: one is to use ","; the other is to use a small black dot "."
In countries such as Germany and France, "," is commonly used to write decimals such as 3, 42, 7, 51..., while some countries in the United Kingdom and Northern Europe use "." just like our country. Decimal points, such as 1.3, 4.5...
Knowledge about the origin of decimals
Decimals are decimal fractions without denominators.
There are two prerequisites for the generation of decimals: one is the use of decimal notation; the other is the perfection of the concept of fractions. The appearance of decimals marked the transition from decimal notation from integers to fractions, unifying fractions and integers in form. Our country's understanding of decimals is also the earliest in the world. In the 3rd century AD, Chinese mathematician Liu Hui proposed decimals when dealing with the square root problem in his commentary "Nine Chapters on Arithmetic".
Although our country’s understanding of decimals is much earlier than that of Europe, the representation of decimals used in modern mathematics was introduced to our country from Europe. The largest European contributor to decimals was the Dutch engineer Simon Stevin (1548-1620). He realized the superiority of decimals from the interest table, so he strongly advocated the introduction of decimals into the entire arithmetic operation, so that decimals can effectively participate in counting. However, Steven's decimal notation is not very good. For example, 139.654, he wrote 135⊙6①5②4③. The number in the circle after each number is used to indicate the position of the number in front of it. This method of notation makes the form of decimals complicated. ization, and brings great trouble to decimal operations. In 1592, the Swiss mathematician Jobst Burgi made a major improvement on this. He used a small hollow circle to separate the integer part and the decimal part. For example, 36.548 was expressed as 36.548, which is very close to the modern representation. About a year later, Kravis of Germany first replaced the small circles with black dots. He made his approach public to the world in "Algebra" published in 1608. At this point, the modern notation of decimals was established. Handwritten newspaper information about scores
There are ready-made templates for you or you can add content yourself. Handwritten newspaper about "love"
Father's love, a lifetime of wealth
p>Father's love is a mountain, the fire that protects life; father's love is a fire, igniting a lamp of hope; father's love is a lamp, lighting the way forward; father's love is a road, leading your life.
I once didn’t understand why my father’s straight spine was curved, I didn’t understand why my father’s handsome face was haggard, I didn’t understand why my father’s thick black hair was gray, I didn’t understand why my father worked hard for most of his life. ...
Until the third grade of junior high school.
That day, the wind was roaring and the vegetation was bleak. I was sitting on the bus, preparing to get off and go home alone. However, I saw a person. In the dark world and the biting wind, that person People were trembling. The wind kept ripping off the corners of his clothes—it was his father! Through the window, I could clearly see my father’s white hair. It was either stained by the bright moonlight or decorated with gorgeous words. It was just white hair. It was a piece of white hair. My father’s white hair was touched again and again. The strong wind overwhelmed me but I stood up unyieldingly again and again. I knew who it must be for...
Is it my father's white hair or my father's heart that is constantly being crushed and stood up? ? When the bus stopped, I walked down quickly. Apparently, my father saw me. He no longer blocked his coat from the wind with his fingers, but ran towards me quickly. His coat completely succumbed to the strong wind, but he But I didn't care at all that the red sweater I was wearing was beating in the inexplicable darkness and running towards me.
At that moment, I clearly saw my father’s fiery heart approaching me in the cold. At that moment, I burst into tears.
My father gently held my hand to warm it up, but what I touched was clearly a big hand as cold as ice. I held my father's hand tightly, but my father was busy. Dodge, "My hands are too cold." I ignored my father's dodge and grabbed those cold hands back. I knew: I was grabbing the wealth of my life.
My father used the aging of his life to turn into mountains, into fire, into lamps, into roads, into bit by bit fatherly love, to accompany me every day, every second, to accompany me in this life. lifetime. Father, your love is the wealth of your daughter’s life. Because of your love, your daughter will not be poor in her life.
Father's love
When I was a child, when someone asked me whether I loved my father or my mother, I would declare loudly without hesitation: "I love my mother!" In my mind, Dad is so distant and vague. My father was born in a mountain village surrounded by mountains. He was a simple and honest son of Dashan. When he was sixteen, with the stubbornness and fortitude given by the mountains, he boarded the train heading north, resolutely joined the army, and left the world of his hometown.
Ever since I fell to the ground, I have had a very unfamiliar impression of my father. Whenever I asked my mother in confusion, "Why doesn't Dad want us anymore?" My mother would always hug me lovingly, "Because Dad shoulders the sacred responsibility of protecting the family and the country." My childish mind felt that my father was very selfish. Why? For that piece of olive green, would my father cruelly leave us, mother and son, to depend on each other? In my childhood memory, there is only my mother's kind smile, which supported my whole life.
After my father was demobilized, he was transferred to the political and legal department. At that time, I gradually became sensible. Twelve years of military service have made my father serious and resolute. He has very strict requirements for me. From study to life, he wants me to be meticulous, conscientious and meticulous. The fault of the son is the fault of the father.
His attitude towards me has reached the point of harshness, and I hate and fear him even more. I don’t understand why he always faces me with a serious face, and I don’t understand why he always scolds me cruelly when I make mistakes. ? I think my father and I are incompatible. There is an insurmountable gap between us, and there are too many barriers.
I rarely talk to my father, let alone communicate. I always talk to my mother about my concerns, and she will analyze the pros and cons with me in a persuasive and persuasive way. My mother is my spiritual support and has always held up a blue sky for me to fly. Unfortunately, when I entered the flowering and rainy season, my loving mother passed away due to ineffective treatment. When I was young, I suffered the pain of life, separation and death of my relatives prematurely, and I was depressed all day long. The cruel reality made my father suddenly become much older. He buried the grief of losing his wife in middle age deeply in his heart. Several times I saw him sitting alone in a dark room meditating, with the thick smell of smoke lingering around him. When I When I couldn't help but interrupt my father who was indulging in his thoughts, I saw the traces of tears remaining in the corners of the eyes of the iron-clad man. The man didn't shed the tears lightly because he hadn't reached the point where he was sad. In the days that followed, my father took on the burden of the family. The heavy housework and tiring work made him breathless, and he became even more unsmiling. In the dead of night, his heartbreaking cough always brought me out of my dreams. When I woke up, my father's sighs from tossing and turning made me burst into tears.
For this broken home and for me to have a warm harbor, a woman came into my family, and she is my stepmother. My virtuous mother kept the family in order, allowing my father to devote himself to work without any worries. My father's mood gradually improved, but I became even more silent. I can't accept all the sudden changes. Later, a lovely little sister was added to my family. Later, I left this ups and downs home and went to another city to continue my studies. Too many things and people have changed, which makes me see clearly that everything around me has changed.
When I strolled along the picturesque green paths of the campus and saw carefree children playing and holding the hands of their kind father, my father’s mountain-like figure flashed through my mind. My thoughts flew across thousands of mountains and rivers, and scenes of me getting along with my father kept reappearing. When I was at home, my father was always a book that I could not read, but now I am studying alone in a foreign country, which makes me worried. Missed so much.
When I returned home for the first time, I was extremely excited. My father just relaxed his frown, and then his face was as cold as ice. My heart is like a knife. My son has traveled thousands of miles to return home. Why can't he smile? I don't ask for anything, just a smile or a few words of greeting are enough, but no, my father is always as serious as a mountain. I'm really disappointed and heartbroken.
I was so angry that I didn’t say a word to my father in those days. The night before I went back to school, I deliberately contradicted my mother rudely, and my father slapped me mercilessly. I hid my hot face and went back to my room angrily. The thick door separated the two worlds of my father and me, and my heart was full of resentment. I bit my lips and controlled myself not to shed tears, but the tears still flowed out unsatisfactorily. The next day, at dawn, I packed my bags and left home. My father sent me to the station on his motorcycle without saying a word. I sat on the back seat and saw that my father had already turned into a man with silver hair. Time is not forgiving! An indescribable feeling came to my heart, and my resentment disappeared. I tried to break the awkward silence, but I never had the courage. Before boarding the car, I looked back at my father. He was still standing there, watching me leave. The changes of the years had made his tall body a little rickety. It looked so thin in the bleak cold wind of late autumn. My father is old!
I suddenly remembered my mother's sincere words last night: "Your father is so worried about this family and letting you study with peace of mind! Not only does he have to work harder, but he would rather not go to school when he is sick. I'll go to the doctor and save some money to send to you. I'm afraid you won't have enough food and clothing to keep you warm. I hope you can study hard and get ahead. His temper is so hot, and he also hates that iron cannot be transformed into steel. After beating you, he I also regret it very much, blaming myself for being impulsive. How old are you, but you have to understand his good intentions!" These words were said by my mother when she was getting the medicine after my father beat me.
My tears fell silently again.
For a long time, I thought that my father did not love me or care about me. In my mind, he was a distant star, bright but not close. Now I finally understand what is true and ordinary. . My father has always tolerated and loved me with his mountain-like mind, but I mistook his love for hatred. It turns out that I am so ignorant, small, selfish and narrow-minded.
I thought that only earth-shattering eternal love can last forever. It turns out that selfless father's love shines with the sun and the moon. Only then did I realize that this feeling of closeness and love is so unforgettable!
Moist feelings
It turns out that love only makes me very painful, and I can’t get out of my mother’s moist feelings no matter how hard I go. Maternal love becomes a thread both horizontally and vertically. ,
Thousands of knots are tied together, and a wounded heart cannot be netted.
——Inscription
I am a quiet girl. I like to watch I am in a daze with a shy little flower, and I like to stand by the window in the dead of night and watch the lovely stars. The cold moon is silent, and the moonlight gently falls on the ground, illuminating the dark world, and also illuminating this quiet girl who loves the moon.< /p>
I have no choice but to be a quiet girl. Haruki’s articles are very wild and I like them. In real life, Haruki is a girl with a lot of personality and likes to wear scarlet lips. Wearing very weird clothes. I can't, I can only linger in my mother's wet feelings forever. It's not that I can't find an exit, but I can't go out. I'm afraid that as soon as I take one foot out, I will hear my mother's stern reprimand. I saw my mother's sad tears. In an instant, my determination was like the sea bursting its embankment. I quietly took back the foot I took and continued to wander. I don't know how many times the sad tears fell, and the condensed beads were all over the ground, crystal clear. .Pick one up and look at it in the sunshine. A girl’s heart is running on the wasteland. Behind her, her mother’s tears fill the wasteland, washing out a wisp of sadness as the setting sun returns.
Me I finally understood that there is another kind of love called "pain". My life is very monotonous, without the color that an 18-year-old child should have. Everything has been designed by my mother - my clothes, daily life, and everything. I have ideas. All I have to do is execute. Children of the same age grow up in a purely natural environment. I can only grow up quietly in the glass cover of maternal love in the way designed by my mother. My mother is very satisfied with my obedience. "You understand, mom actually loves you very much." My mother held my hand and said softly under the moon. Yes, I understand, so I chose to obey.
I broke away from my mother's hand Hand, walk away without looking back. Close your eyes slightly, and there is a fish called "pain" swimming happily in my heart. There is a saying that pain and happiness are there. There is another saying, for love, I choose It hurts.
I really want to go back to my childhood, so that I can truly fall in love with my mother's "meticulous" love. Really, growing up is wrong. I have lost too many things, even my mother's love It was also so cold. Between me and my mother, there was a very wide river. I was on the left bank and my mother was on the right bank. We all tried to find a bridge and walked to the bridge bank.
The Four-Dimensional "Fantasy City" It’s very beautiful, the falling cherry blossoms, Kasuo looking for freedom, and the tears turned into love. I also want to find freedom, I want to be a wild lily displayed on the cliff, lonely but blooming freely. The shooting star holds the long Tears streak across the sky, with only one wish: to have a pair of wings, fly happily and freely.
I love my mother very much, I love her more than myself. We are mother and daughter in this life, it is fate, I don’t want to It leaves scars on my mother’s tired heart. For my mother and her moist love, I am willing to see the scenery on the road paved by my mother, and I am willing to listen to her instructions without any reason.
I am a person Quiet girl, standing quietly at the window of love - guarding the world where my heart flies. I'm exhausted, so give me high marks!
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Quotations about books
— ————————————
Books are a huge power - Lenin
Books are inseparable life partners and mentors for young people - Gorky
Reading a good book is talking to many noble people - Descartes
The more you read, the more you feel empty in your belly - Shelley
Every This book is a soul printed in black on white paper. As long as my eyes and my reason come into contact with it, it comes alive - Gorky
Time gives us experience, and reading gives us Knowledge - Ostrovsky
Love books - this is the source of knowledge! Only knowledge is useful, and only it can make us mentally strong, loyal and rational people, able to truly love mankind, respect human labor, and sincerely appreciate the beauty produced by the great uninterrupted labor of mankind. The man of fruits - Gorky
Ideal books are the key to wisdom - Leo Tolstoy
Live with books and never sigh - Roman ·Roland
Reading makes people fulfilled; talking makes people agile; writing and note-taking make people precise.
History makes people wise; poetry makes people clever; mathematics makes people precise; natural history makes people profound; ethics makes people solemn; logic and rhetoric make people eloquent - Francis Bacon
Books - contemporary real University - Thomas Carlyle
All kinds of stupid things, under the influence of reading good books every day, seem to be roasted on the fire, gradually melting - Victor Hugo
There are no books in life , as if there is no sunshine; wisdom without books is like a bird without wings - Shakespeare
Living in our world, it is completely impossible to understand people without reading - Gorky
< p> The more you read without thinking, you will feel that you know a lot; but the more you read without thinking, you will clearly see that you know very little - VoltaireReading is my only entertainment. I do not waste my time in hotels, gambling, or any kind of bad games; but I work as hard as necessary and tirelessly on my career. - Franklin
Book - The most beautiful thing ever issued by mankind sound. ---Levine
Books are the legacy left to mankind by great geniuses. ---Addison
The essence of all past eras is contained in this book. ---Carlyle
Books are the common spiritual wealth of mankind and the ladder of human progress.
Books are the breast milk that nourishes the soul and the key to enlightening wisdom.
Reading any good book is like talking to the most brilliant people of the past. --Descartes
Reading makes people enriched, talking makes people agile, and writing makes people precise. --- Francis Bacon
Reading is to the mind what exercise is to the body. ---Addison
Books are a good companion. It is full of knowledge, but does not chatter endlessly.
When you are eager, it comes to give you detailed advice,
but never pesters you. ---Biqie
Reading a good book is like making a good friend. --- Zang Kejia
Good books will have a profound impact on the growth of young people and even their lives.
Reading only provides the mind with material for understanding;
Thinking makes what we read become our own. --- Locke
Experienced people read with two eyes. One eye sees the words on the paper, and the other eye sees the back of the paper.
——Goethe
Every knowledgeable person should read 8-10 books in his life. What books should I read? If you want to understand this, you have to read at least 15,000 books.
—Babida
Merely browsing through letters, words, and pages—that is not reading. Reading and rote memorization - not reading either. When reading, you must have feelings and a sense of aesthetics. You must be able to understand other people's good advice and put it into practice.
——Ba Jin
I feel that when books tell me about characters, feelings, thoughts and attitudes that I have never heard of or seen before, it seems that every book is opened in front of me. It opened a window to an incredible new world.
——Gorky
Books make people become unrestrained.
——Gratkov
Books make people the masters of the universe.
————Pavlenko
All the excellent qualities in me should be attributed to books.
————Gorky
Life without books is like there is no sunshine; wisdom without books is like a bird without wings.
————Shakespeare
Read more, read good books, and then write your own feelings. This is the beginning of writing a good composition.
————Bing Xin
Books can keep our childlike innocence; books can keep our youth.
——— Yan Wenjing
Good books are the most precious treasures - Belinsky
Books are the only immortal thing - Chute< /p>
Books make people the masters of the universe - Pavlenko
The souls of the entire past lie in the books - Carlyle
The influence of people is short-lived and Although weak, the influence of books is extensive and far-reaching - Pushkin
People can't live without books just like they can't live without air - Korolev
Books are not only life, but also life. The source of cultural life in the present, past and future - Kufayev
Books introduce us to the best society and allow us to get to know the great wise men of all ages - Smyers
< p> Books are this tool for transforming the soul. What mankind needs is enlightening nourishment. And reading is exactly this kind of nourishment. ——Hugo
The soul of the entire past lies in the book. ——Carlyle
Good books are the rich blood of a great mind.
——Milton
Reading a good book is talking to many noble people. ——Goethe
Without reading, there is no real education, and at the same time, it is impossible to have any discernment. ——Herzen
When reading, I would like to stay in front of every beautiful thought, just like I stay in front of every truth. ——Emerson
Books are ships of thought sailing in the waves of the times. They carefully transport precious cargo to one generation after another. ——
— Bacon
Read thousands of books and write like a master.
Good books are the most precious treasures——Belinsky< /p>
Books are the only immortal thing - Chute
Books make people the masters of the universe - Pavlenko
The entire past lies in the book The soul of human beings - Carlyle
The influence of people is short and weak, while the influence of books is extensive and far-reaching - Pushkin
People can't live without books just like they can't live without air - Ke Lolev
Books are not only life, but also the source of cultural life in the present, past and future - Kufayev
Books introduce us to the best society and make us Get to know the great wise men of all ages——-Smiles
Books are this tool for transforming the soul. What mankind needs is enlightening nourishment. And reading is exactly this kind of nourishment. ——Hugo
The soul of the entire past lies in the book. ——Carlyle
Good books are the rich blood of a great mind. ——Milton
Reading a good book is talking to many noble people. ——Goethe
Without reading, there is no real education, and at the same time, it is impossible to have any discernment. ——Herzen
When reading, I would like to stay in front of every beautiful thought, just like I stay in front of every truth. ——Emerson
Books are ships of thought sailing in the waves of the times. They carefully transport precious cargo to one generation after another.
——Bacon