一、心理认知不足部分学生觉得学习了四则运算,只需要按四则运算的顺序和方法进行计算,就能得到正确的答案,因此造成简便计算的主动性不强。简便计算追求更快、更直接、更准确,它的意义不仅是增强学生的计算能力、减少计算量,更重要的是培养学生思维的灵活性,提高学生的数学素养,让学生体会数学的简洁美。为了更好地解决学生心理认知的不足,建议教师在教学过程中,把能用简便方法计算的题与不能用简便方法计算的题在作业中同时出现,精心设计相 First, lack of psychological understanding Part of the students think that learning the four operations, only need to press the four operations in the order and method of calculation, you can get the correct answer, resulting in simple calculation is not strong initiative. The simple and quick calculation is more direct and accurate. Its meaning is not only to enhance students’ computing ability and reduce the computational load, but also to cultivate the flexibility of students’ thinking, to improve the students’ maths accomplishment and make the students understand the maths conciseness nice. In order to better solve the lack of students’ psychological cognition, it is suggested that during the teaching process, teachers should combine the questions that can be calculated by the simple method with the questions that can not be calculated by the simple method at the same time.