1 quick calculation 1: quick mental calculation, quick calculation.
Fast calculation 1: fast mental arithmetic-a teaching mode that is really synchronized with primary school mathematics textbooks.
Fast learning is the only way to perform simple operations without any physical objects, and it is not necessary to practice abacus, wrench fingers and chessboard.
The arrangement and difficulty of the textbook "Fast Mental Arithmetic" is a fast calculation that closely follows the syllabus of primary school mathematics and integrates with junior high school algebra, which is simpler than the primary school textbook. Simplify written calculation and strengthen oral calculation. It is simple, easy to learn and interesting. After a short period of training, primary school students can write answers directly by adding, subtracting, multiplying and dividing, not vertically.
Special effect of quick mental arithmetic
I have learned all the multiplication, division, addition and subtraction of any multi-digit number above grade three.
Addition and subtraction of high two digits, multiplication of two digits, division of one digit.
First grade, multi-digit addition and subtraction.
Kindergarten large classes learn multi-digit addition and subtraction, tailor-made for preschool children, and pass the primary school oral calculation in advance. It is helpful for children to learn mental arithmetic quickly in kindergarten to go to primary school in the future.
Children no longer use draft paper to do their homework, but write answers directly.
Fast mental arithmetic is different from abacus mental arithmetic and palm mental arithmetic. Fast mental arithmetic invented by Xi 'an teacher Niu Hongwei. (Teacher Niu Hongwei obtained the patent certificates issued by People's Republic of China (PRC) and China National Intellectual Property Administration. Patent number; ZL200830 1 174275。 Protected by the Patent Law of People's Republic of China (PRC). ) mainly through certain rules in textbooks, children are trained to perform fast operations of addition, subtraction, multiplication and division. "Quick mental arithmetic" is helpful to improve the order, logic and sensitivity of children's thinking and behavior, and train children's eyes, hands and brain to react synchronously and quickly. The calculation method is consistent with mathematics in primary and secondary schools, so it is very popular with parents of young children.