Abstract:
From ancient times the solution of arithmetic problems was respected. People have been able to answer a lot of practical questions. It is not for nothing that it is said that "mathematics is the gymnastics of the mind." The problem is not easy to solve. First, you need to know how to use addition, subtraction, multiplication, and division. That's not all. The difficulty is to be able to perform the arithmetic operation required to find the unknown and sought value.
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