The steps of drawing a mathematical flow chart are as follows: 1. Determine the start and end of the process: define the start and end of the process and the order of each step.

2. Determine the steps of the process: break down the process into clear steps and mark them with boxes.

3. Add notes for each step: Add a short description for each step so as to understand the details of the process.

4. Connecting steps: Connect the steps in turn with arrow lines to indicate the flow direction of the process.

5. Check and modify: check whether the logic of the flow chart is clear and conforms to the actual situation, and modify it.

6. Beautify and labeling: Beautify the flowchart as needed, add border and background color, and label the title and version information of the flowchart.