How to cultivate students' verbal ability? Oral arithmetic teaching plays a very important role in computer teaching. However, in practical teaching activities, oral arithmetic is often ignored because of its simple content. In normal teaching, teachers often use boring training instead of rich thinking activities, which directly stifles students' interest in learning and leads to students' low oral expression ability, so that some students still use "snapping their fingers" to do oral calculations in the second grade. I think we should pay full attention to the teaching of oral arithmetic, and the teaching process should conform to the characteristics of students' psychological development and cognitive laws. So, I think there are several ways to teach oral arithmetic. First, pay attention to the hands-on operation of learning tools, so that students can get the concept of number and understand the calculation method. Recognition of numbers is the premise of calculation. On the other hand, calculation can deepen the understanding of the concept of numbers. In order to make students acquire the correct concept and calculation method of numbers, it is inseparable from students' hands-on operation, which is an important link to cultivate students' calculation ability. Since this semester, I have paid special attention to students' hands-on operation of learning tools, acquiring the concept of numbers and understanding calculation methods. In the understanding part of digital teaching within 10, we let students understand the composition and decomposition of numbers through pictures or physical pictures, and then let students consolidate the composition and decomposition of numbers through repeated hands-on operations, and pay attention to the close combination of action, thinking and language in the operation process, thus cultivating students' attention, observation, hands-on ability, mathematical language expression ability and logical thinking ability. I spent more time doing the "circle ten" operation for students when I was teaching the carry addition within 20, so that students could understand the "add ten method" from the operation. Doing so lays a good foundation for learning abdication subtraction within 20 years. Second, the reality of life leads to the teaching of computing, and understanding arithmetic is the key to improving computing ability. In computing teaching, understanding arithmetic is the key to teaching. Understanding arithmetic is mainly to stimulate students' awareness of how to calculate. Then it is necessary to introduce from the reality of life, so that students can explore reasonable arithmetic in solving practical problems in life. For example, when teaching carry addition of 9 plus several, we can set up situations to stimulate interest and let students explore and discover actively. First of all, in the introduction, the situation is set. The rabbit is going to treat. It has prepared two cases of milk for his good friend. In the first box, there are 9 bottles of milk. In the second box, there are 8 bottles of milk. How many bottles of milk has the rabbit prepared? Kid, can you help the rabbit calculate? Through the introduction of small animals that students love, students are willing to help rabbits calculate, and their interest in learning is stimulated.