And correct, is it necessary to carry out special quick calculation training? A: It is very necessary to improve children's oral arithmetic. There are three main problems to be solved in primary school mathematics. 1 calculation, 2 thinking, 3 habit. Calculation is the basis, and oral calculation is the basis of calculation. Therefore, it is necessary to strengthen oral arithmetic training. The first grade oral calculation is mainly the addition and subtraction within 20, the second volume of the first grade is the addition and subtraction within 100, and the first volume of the second grade is mainly the multiplication in the table. To improve children's computing speed, we can start from the above three aspects at present. Time is limited, so finish a set of exercises (20 questions) and prepare more sets of questions. Can be specially trained. Single training of addition, subtraction, multiplication and division, combined training of addition, subtraction, multiplication and division. In a set of problems, there are both addition and subtraction. Record children's time and accuracy. Encourage children's progress and point out their problems in a friendly way. I believe your children will be better.