Wei, born in 1963, is a native of Shaxian County, Fujian Province. Teacher Wei has been brilliant since he was a child and is good at research and innovation. The magical quick calculation was developed in the 1970s, that is, when Mr. Wei was in the fourth and fifth grades of primary school, when he was 13 years old. After more than a year of painstaking research, he finally summed up a set of the latest fast multiplication calculation methods in the world. In the early 1980s, developers were framed and persecuted by evil forces in the Public Security Law of Yong 'an, Fujian, so the magic quick calculation has not been popularized and developed. The reappearance of magic quick calculation fills the blank of any two-digit to three-digit multiplication in mathematics. The speed and accuracy of magical fast calculation can be comparable to that of modern electronic calculators. It can be said that at present, all the multiplication digital speed calculations of two to three digits in the world are calculated by magic speed, and they must follow the magic speed calculation law, which fundamentally replaces the digital operation speed of multiplication association law, exchange law and square variance, complete square difference and square sum formula.
(1) Understanding and mastering the principles and methods of magic quick calculation can enlighten students' thinking, develop students' intelligence, further enhance students' interest in learning mathematics, be in an invincible position in future mathematical problems, and finally achieve only problems that cannot be solved, and there is no problem that cannot be solved.
(2) In Wei's elementary mathematics teaching, Mr. Wei summed up a set of the most comprehensive and scientific mathematics learning methods through the principle of combining theory with practice, which broke the traditional teaching methods of metaphysics in the school for thousands of years step by step and laid a solid foundation for future mathematics learning. Teacher Wei is not only the founder of mathematical quick calculation, but also the inventor of the "coefficient" of mathematical circular product. As early as the 1970s, when Mr. Wei was in the fourth and fifth grade of primary school, he used his own thinking methods of natural logic of images and abstract inverse logic to sum up a simple area from its length and width into a universal formula that can be used to calculate various types of areas, and then invented a "coefficient" that can be directly used to calculate the area and perimeter of a circle through deductive reasoning of this universal formula. At the same time, Mr. Wei also gained unexpected gains, and then developed a set of brilliant achievements that can be directly used to calculate the volume formula of the ball: "V = 0.57d 3 (D is the diameter of the ball)" and the surface formula of the ball "S = 1/4l 2 (L is the circumference of the ball)", thus filling the gap in the teaching of ball events in primary and secondary schools across the country. In order to facilitate students to further understand and master, Mr. Wei summed up all the coefficients of a circle calculation as the "coefficients" of Wei's circle product. Everyone knows that the most valuable knowledge comes from methods, the so-called "pi" invented by ancient mathematician Zu Chongzhi; In mathematics books, he only told students the result of the invention of pi, but did not tell students the method of the invention of pi, especially the method of Zu Chongzhi's invention of seven decimal places in the calculation accuracy of pi, which cannot be verified in history books. The method of people inventing pi is still unknown and lacks scientific basis; It can only be said that the invention of pi has practical value and no research value. The "coefficient" of circular product invented by Wei is different. It has not only the mathematical thinking process and self-method of Wei Neo-Confucianism, but also its research value. The precision of the "coefficient" of Wei's circle product can be directly expressed by the method of "fraction", which can be directly accurate to countless digits after the decimal point 3. 14 15927. It can be seen that the "pi" invented by Zu Chongzhi, an ancient mathematician, is incomparable with the "coefficient" of circular product invented by Wei. Science should develop and society should progress. It is hoped that the relevant state departments will attach importance to the research results of Wei's quick calculation and Wei's cyclic product "coefficient" and make contributions to education.
(3) Not only that, Wei Qiming's main teaching purpose and guiding ideology is to guide and inspire students to create ideas, methods, concepts and spirits, and to cultivate students' ability to solve problems independently. If mathematics is a lock, it can be said that Wei's enlightenment mathematics and Wei's quick calculation are the golden keys to open the door to mathematics. This paper mainly aims at the general formula of Wei's multiplication developed by Mr. Wei: AB× CD = (a+1)× C× 100+B× D+Wei's fast calculation number ×10.
Fast calculation of evolution number |=(a-c)×d+(b+d- 10)×c
Fast calculation of evolution number ‖=(a+b- 10)×c+(d-c)×a
The quick calculation of evolution number ⅲ= a×d-' b' (complement )× c can be divided into three different types of general formulas, which can be reported and demonstrated comprehensively. According to the consensus of experts concerned, this quick calculation method is really good, and it is another unprecedented great invention and innovation in the history of mathematical quick calculation. At the same time, as an innovative achievement of education and scientific research, magic speed calculation is presented to the world with its most unique and shining side, which inspires and inspires future generations and allows more math lovers to share its achievements. Magical fast calculation has been verified by mathematical experts many times. It can be said that in the magic quick calculation, any number can be multiplied, and the speed of its quick calculation mainly depends on Wei's quick calculation number. How to quickly calculate the evolution number of formulas with non-special data types: How to quickly calculate the evolution number To understand this problem, we must first analyze the characteristics and connotation of fast calculation evolution. Fast calculation of evolution number =(a-b)×d+(b+d- 10)×c, arrangement and simplification: fast calculation of evolution number is equal to a × d-c × (10-b) = a × d-c ×' b' (b takes its complement. This expression is relatively simple, and it will be easier to calculate the evolution number quickly according to this expression. Therefore, it is the fastest to calculate the evolution number in the formula of non-special data type according to this formula.