小学生计算能力的培养是小学数学教学的一项重要任务,要求学生在计算能力方面达到“熟练”“比较熟练”“会”三个层次,这是根据每部分所起的作用提出的不同要求:一位数的加减乘除是最重要的,必须要求学生非常熟练并能轻松自如地口算;万以内的加减和两位数的乘除,则要求学生比较熟练地进行笔算;三位数以上的乘除以及万以上的加减,则只要求学生会算。一、讲清算理是关键“笔算教学应把重点放在算理的理解上”“根据算理,掌握法则,再以法则指导计算”。学生掌握计算法则关键在于理 The training of primary school students’ computing ability is an important task in primary school mathematics teaching. Students are required to reach the levels of “proficiency”, “more skillfulness” and “fairness” in terms of computing power. This is based on each part The different requirements put forward by the role: Addition, subtraction, multiplication and division of one digit is the most important, students must be very skilled and should be able to easily and easily count; multiplication and division within two thousand and two digits multiply and divide require students to be proficient in pen and writing ; Multiplication and division of more than three digits and more than the addition and subtraction, only ask students to count. First, clarify the principle of arithmetic is the key “Pen arithmetic should focus on the understanding of arithmetic ” “According to the arithmetic, grasp the law, and then the law to guide the calculation ”. The key for students to master the law of calculation lies in reason