口算是不借助计算工具,不表述计算过程,而直接通过简化的思维过程计算出结果的一种运算方式。口算,在数学教学中和生活运用上有着重要的地位,口算也是学生学习其他计算的基础,口算水平是计算能力的重要反映,也是解决其他数学问题的必要能力,所以,重视口算能力的培养,是小学数学的重中之重。纵观小学低段的口算教学,在教师注重让学生经历口算方法形成的过程,引导学生自主探索算法,掌握算理的今天,我 Mouth calculation is not without the use of computing tools, does not represent the calculation process, and directly through a simplified thinking process to calculate the result of a computing method. Mouth arithmetic plays an important role in mathematics teaching and life utilization. Mouth arithmetic is also the basis for students to learn other calculations. Mouth arithmetic is an important reflection of computing power and also necessary ability to solve other math problems. Therefore, Is the primary focus of mathematics. Throughout the lower primary school mathematics teaching, teachers pay attention to let students experience the process of formation of oral arithmetic, guide students to independently explore the algorithm, master the arithmetic today, I