For example, subtraction is used to solve problems, addition is used to solve problems, subtraction is used to solve problems, multiplication is used to solve problems and division is used to solve problems. Checking calculation can effectively find errors in the calculation process, but it is not very useful for solving problems. Compare the data obtained by checking calculation (using the results to derive conditions) with the original data, and prompt whether the operation is correct.
Need to know:
The process of replacing or converting a quantity or number according to mathematical rules to get the result of an expression. It is the main content of mathematics research, and mathematics is the subject of studying quantity and its operation, graph and its transformation. The basic operations of numbers are four arithmetic operations, namely, addition, subtraction, multiplication and division.
Multiplying a number by several times of itself is called power operation; A number raised to the power of n (n is a positive integer) is called root operation. These four operations, plus power operation and square root operation, are collectively called algebraic operations.
In advanced mathematics, besides algebraic operation, there are limit operation, derivative operation and integral operation, among which the most basic operation is limit operation, and the operation related to limit is called "analytical operation".