Do mental arithmetic
Children should not only know how to calculate, but also understand the arithmetic in their hearts. Let children understand the arithmetic of calculation and break through the calculation of numbers in spelling. The child completes the calculation on the basis of understanding.
do mental arithmetic
Not only learn calculation, but also pay attention to cultivating children's mathematical thinking ability, so that children can deeply understand the essence of mathematics (including), the meaning of numbers (cardinal number, ordinal number, including), the operation mechanism of numbers (addition and subtraction of the same number of numbers) and the way of mathematical logic operation, so that children can master the decomposition method of complex information and develop divergent thinking and reverse thinking. The child's brain works fast.
Fast calculation
It is not enough just to know how to calculate the problem. There should be a time limit for oral calculation in primary schools. It takes time to speak whether oral calculation is up to standard, that is, it is not enough to calculate problems, mainly to speed up.
Write an arithmetic problem
At present, China's education system is exam-oriented education, and the standard for testing students is exam transcripts. Then the students' main tasks are to take exams, answer questions and write with a pen. Students in exam-oriented education should get high marks, and writing arithmetic training is the main line of teaching. Written calculation does not use any physical calculation, regardless of horizontal, vertical, and even addition and subtraction can be calculated freely.