The verbal ability is the most basic mathematical ability. The lower grades of primary school are the key to learning oral arithmetic. We must attach importance to the cultivation of pupils' verbal ability at present, especially those with learning difficulties, which will have a long-term and significant impact on students' future study and life. Mathematics curriculum standard clearly points out: "To cultivate students' computing ability, we should pay attention to basic oral arithmetic training. Oral calculation is not only the basis of written calculation, estimation and simple operation, but also an important part of calculation ability. It is necessary to guide students to master basic oral calculation methods on the basis of understanding, insist on regular practice, and gradually achieve proficiency. "Therefore, oral arithmetic teaching is a basic task in primary school mathematics teaching. It is not only the basis of calculation, but also an important part of cultivating students' logical thinking ability, oral expression ability and innovative consciousness.

In the actual learning process, students don't pay much attention to verbal arithmetic. Through the investigation, it is found that children generally think that such problems are too simple, so it is better to think about application problems, which are interesting, right, proud and wrong. Some students have a fast speed in oral calculation of one or two questions, but if they have too many oral calculation questions, they will dawdle and can't finish it for a long time, showing boredom and fatigue; Some students are careless in oral calculation, either misreading the operation symbols, or writing wrong numbers, or even making unreasonable mistakes, so they can't work out the correct result. There are still some students who can't work out the answer by mouth because of their poor foundation, so they need to do pen calculations. Therefore, strengthening oral arithmetic is an important trend of mathematics reform. Especially the rural primary school students' oral arithmetic level (including our school) is particularly low. . Therefore, it is hoped that through the research of this topic, the causes and solutions of pupils' oral arithmetic errors can be found out. According to my own teaching experience and the teaching results of students with learning difficulties, I talk about some experiences:

1, oral calculation is the basis of written calculation, which has the characteristics of less time, large capacity, vivid form and fast speed. Therefore, oral arithmetic training can promote the formation of junior high school students' computing ability and cultivate the agility of thinking.

2. Visual arithmetic and listening are two basic forms of oral arithmetic training. Books that are thought to be spoken by eyes, brain and mouth; Listening and calculation can only be achieved by listening and recording. In oral arithmetic training, the forms of oral arithmetic are often changed, and the combination of visual arithmetic and listening arithmetic can be used alternately, which can improve students' interest in oral arithmetic.