1. Familiar with basic knowledge and formulas. In the exam, answering questions quickly requires a deep understanding and mastery of basic concepts and formulas. Therefore, it is recommended to spend time reviewing and practicing related basic knowledge and formulas.

2. Practice problem-solving skills. Some topics may have some specific problem-solving skills, such as solving algebraic equations and the properties of geometric figures. Familiarity with these skills can help you solve problems faster.

3. Learn to calculate quickly. There may be a lot of calculation questions in junior high school math exam, so it is suggested to practice the ability of fast calculation more. You can use manual calculation or mental calculation to improve the calculation speed.

4. Pay attention to time management. In the exam, time is a very valuable resource. Therefore, it is suggested to look at the distribution of questions and scores on the test paper before starting to answer questions, and then allocate time reasonably according to your actual situation.

5. Do more simulation papers. The simulated test paper can help you get familiar with the form and difficulty of the exam, and at the same time, it can help you better understand your weaknesses and areas that need to be strengthened. Through constant practice and reflection, you can gradually improve the speed and accuracy of solving problems.