Combined with children's own situation, from simple to difficult, the speed is slow first and then fast, and gradually improve children's ability and sensitivity to numbers. Computing ability is also a reflection of comprehensive ability. The cultivation of computing ability is not only related to the basic mathematical concepts, but also related to the training of children's thinking, which should be paid enough attention to. Calculation is only the starting point, and it is more important to solve the problem through the practical application of addition and subtraction.

Extended data Most children have learned addition and subtraction in the 20 years before entering school, but the concepts of number cognition, comparison, digits and decimal digits are gradually introduced into teaching, which makes the children's concept of numbers fundamentally change and enter systematic and grouped continuous content learning.

Before entering the formal study of senior one, you should master the division of all numbers within 10. The emphasis is on the composition and decomposition of 10. Children of this age are suitable for understanding with physical operation and learning and practicing with painting.