Current location - Training Enrollment Network - Mathematics courses - What is the concept of decimal in primary school mathematics?
What is the concept of decimal in primary school mathematics?
Decimal interpretation

[Decimal; Decimal]

A special form of decimal, expressed by decimal, for example, 85/ 100 can be written as 0.85 with a symbol in the middle? It is called the decimal point, and the number to the right of the decimal point is the decimal point. "Mencius Gao Zi Shang": "The number of husband games is decimal." Zhu Note: "Number, skill also." "Huai Nan Zi Yuan Tao Xun": "If you enlarge the Tao and let a decimal number, it will be like catching a mouse." Han Xun: "When I heard about the ancient system, nobles must be filial and loyal, and they will learn from each other. When they heard about the hard time emerging, they went to the court to get it. Otherwise, the scores of Quyi can be entered. " (2). Skill number. Generally refers to yin and yang divination, ghosts and gods myth, blessing success and so on. Han Shu's literary and artistic annals: "What is the official reason for the family flow of Yin and Yang? Respect the heaven, such as the sun, the moon and the stars, and respect the people." . And the person who was caught did it, that is, taboo, decimal muddy, let others do things, let ghosts and gods do it. "History of Northern Sui Dynasty": "(Emperor Gaozu of Sui Dynasty) is gentle and thoughtful, so it is better to be a decimal. It is said that God's candles and walking sticks can cure diseases. "Song Sushi's poem" Titing Qingxi Temple ":"The suicide note is not dead today, and the decimal number is insufficient. "(3). Small means. Song Tiankuang's Scholars: "Being with Wang in the Prime Minister's House, Zeng Gongzhong said, simplify the decimal number and join the party class." Sheng "Shuidong Diary: Differences of Six Civil Subjects": "Life and death, honor and disgrace, self-ignorance, private wisdom decimal. "(4). Fine details refer to irrelevant knowledge. Sui Shu Jing Ji Zhi Yi':' As for the Warring States, the Confucian Classics should be abandoned, and its purpose should not be investigated, but once scholars reach a million words, it is difficult to understand'. The poem "Liu Tang's bosom friend" has a general title: "If you forget the main idea, you will be good at decimals, but it is difficult to achieve' graceful and logical' and' a word is good or bad'. "(5). A small amount. Song Sushi's "On Six Things and Four Things": "In the meantime, the boundary is full, and no one undertakes to buy the things of the market. Those who only accept the seller's daily money are happy, that is, they see the decimal without boundaries and should not let it go. The current situation of strange things witnessed in 20 years, the 60th time: "Even the fraction of donations ranges from one yuan to dozens of yuan. If you don't win the prize, take out the money and it's over. Who cares? "(6). Mathematical terminology. Abbreviation of decimal. For integers, that is, the number is less than one digit. A little faster. Chen Qing made a "pulse change": "Every morning must be a decimal, and the afternoon must be gentle. "This refers to the pulse.

Word decomposition

Small means that the area, volume, capacity, quantity, intensity and strength are not as good as the average level or the object being compared, as opposed to "big": light rain. Short. Short and pithy. Narrow scope, shallow degree, unimportant nature: insignificant. Part. Make a mountain out of a molehill Time is running out: sit down. Stay. The explanatory number (number) of years represents, divides or calculates: number. Quantity. Numbers. Number theory (a branch of mathematics that mainly studies the properties of positive integers and the laws related to them). Numerical control. A few, a few: several people. A few days. Skills, academic: "The number of games played today is decimal." Fate, heaven