(1) Cultivate the habit of carefully examining questions. When reviewing the questions, ask to have a look, draw two pictures, think three times, count four times and check five times. At first glance, you can see the numbers and operation symbols in the question clearly; The second picture is to mark which step to calculate first and which step to calculate later on the test questions; The third thought is to think about where to use oral calculation, where to use pen calculation, whether to use simple calculation and so on. The fourth calculation is to take notes carefully; Five inspections mean careful inspection.

(2) Cultivate the habit of careful calculation. In the four operations, we should cultivate students' calm learning attitude. When you come across a calculation exam with large numbers and many steps, you should not be impatient, think calmly and calculate patiently. Be careful even with simple calculations. Don't act rashly. If you can do oral calculation, do oral calculation; if you can't, pay attention to careful written calculation. Calculus requires neat handwriting, standardized format and reasonable methods. At the same time, strengthen students' drawing habits to ensure the accuracy of calculation.

(3) Cultivate the habit of careful inspection. It is impossible for students to be absolutely correct in their calculations without making mistakes. Teachers should cultivate the habit of carefully checking calculus after calculation, and take checking as an indispensable part of calculation problems. When checking, be patient and meticulous, and check step by step: first, check whether the numbers in the questions are copied wrong, and second, check whether the calculation process and results are wrong, and correct them in time if any mistakes are found.