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Junior high school math is not good. Is it useful to practice oral arithmetic?
Useful.

Practicing the dictation card seriously is of great help to improve your computing ability. But step by step. In the study of mathematics, we can't do without all kinds of calculation problems. Computing ability is the most basic ability to learn mathematics. Unlike Chinese, the answer to mathematics is subjective and the answer is not unique. Although there are many methods to solve problems in mathematics learning, there is only one correct answer. So the operation is very important.