The correctness of the calculation results is the basis to ensure the application. Calculation takes time, but after the combination of calculation and application, the remaining time of calculation is reduced compared with before, and the calculation accuracy is also significantly reduced. Primary school students' arithmetic ability is not strong, and some second-grade students have to count their fingers. Regarding the problem of students' weak computer skills, improving students' computer skills is an important issue that must be seriously considered. By reviewing the materials and findings in the practice class, the author thinks it is necessary to increase the number of students' calculations in the class, train students' calculation ability more effectively, complete and ensure a certain number of problems in a certain period of time, and they can solve problems, solve arithmetic tasks and improve students' arithmetic speed in a certain period of time. Calculation is a basic skill in learning mathematics, and its accuracy and efficiency directly affect the final solution of the problem.
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