2. Draw a table with horizontal as independent variable and vertical as dependent variable.
3. Assign values to the independent variables, calculate the results of the dependent variables, and fill in the table.
The method of analyzing, thinking, looking for ideas and solving problems through lists is called list method. In primary school mathematics, students often use the list method when solving practical problems, such as reduction problems (backward deduction) and logic problems, so they can use the list method.
For some problems with simple calculation and repeated calculation, the list method is concise and not easy to make mistakes, and some problems cannot be calculated in tabular form, so we can only use the list deduction method. In short, the list method can solve many complicated and interesting problems. The method of analyzing, thinking, looking for ideas and solving problems through lists is called list method.