Sometimes, you will feel bored and lack patience and confidence, so the calculation is not accurate. Second, unskilled knowledge and skills have no complicated conceptual nature in this part of calculation. As long as students fully understand and firmly grasp it, they can form very good computing skills. However, due to the lack of basic skills such as oral calculation, unclear calculation rules and lack of basic calculation skills, it is a major problem of calculation error. Third, bad calculation habits. Some students are sloppy because of calculation. Regardless of the size of the number, whether proficient or not, they are unwilling to write calculus; Some calculations do not use paper, and they are calculated at the back and edge of the exercise book or test paper on the table at will; After calculation, it will not be carefully checked by methods such as estimation and checking calculation. According to the above analysis, in order to reduce the calculation error of students and improve the accuracy of calculation, practical methods must be taken according to the specific situation. First, strengthen oral arithmetic training to lay a good foundation for other calculations. Oral calculation is the basis of all calculations. Only when the basic oral calculation reaches a very skilled level can students pass the calculation well and form a good calculation ability. For this reason, I always use my spare time such as morning self-study to make a one-page verbal card. Parents can also insist that their children do oral math problems every day. The content of oral calculation includes the oral calculation questions in this book and the basic oral calculation contents learned before, so that students can practice it repeatedly to achieve proficiency. Second, design various forms of exercises to improve students' interest in learning calculation. To cultivate and improve students' computing ability, we must pass a continuous and massive

Practice to achieve the goal, but also let students do a lot of monotonous test and calculation exercises repeatedly, students are easy to get bored and can not get the expected results. Therefore, it is necessary to design diverse, flexible, targeted, knowledgeable and interesting exercises, use students' "initiative" and "competitive" psychology, design some math game calculation problems, stimulate students' interest in learning, and urge every student to actively participate in them, so as to get twice the result with half the effort. Third, cultivate students' good computing habits. 1, cultivate the habit of carefully examining questions. When reviewing the questions, we should look at them first (see clearly the numbers and symbols in the questions), cross them out second (mark which step to calculate first, then which step to calculate), think third (when to calculate orally and when to calculate with a pen, is it possible to calculate simply), and calculate fourth (calculate carefully with a pen). 2 cultivate the habit of careful calculation. Train students to be patient, not impatient, think seriously, and be cautious even when doing simple calculations. When calculating, you should write neatly and have a standardized format. Even if it is calculated on draft paper, it should be written clearly to facilitate inspection. 3 cultivate the habit of timely inspection. Be patient and careful when checking, check one by one. One is to check the number symbols, and the other is to check the calculation process. Summarized as a "step by step" calculation habit, check step by step when calculating. Check whether the copying of numbers and symbols is correct, whether the numbers are accurate, etc. And ask students to calculate patiently and carefully according to various corresponding calculation rules to overcome carelessness. 4 cultivate the habit of clever estimation. First, before the system calculation, the range of quantity can be estimated by estimation; Second, the system can judge whether this figure is correct and reasonable through the calculated estimate.