《基础教育课程改革纲要(试行)》在“课程改革的具体目标”中明确指出,要“关注学生的学习兴趣和经验,精选终身学习必备的基础知识和技能。”计算能力是数学学习中必备的基本技能,是学生今后学习数学的奠基,可以说计算能力的培养是小学数学教学的重要内容。然而调查发现,当前小学生的计算能力令人担忧。主要表现为:计算能力下降、估算意识和估算能力丧失、对计算的兴趣降低,数学思维能力得不到应有的 The Basic Education Curriculum Reform (Trial) clearly states in “Specific Goals of Curriculum Reform” that “we should pay attention to students’ interest and experience in learning and select the necessary basic knowledge and skills for lifelong learning.” Competence is an essential basic skill in mathematics learning. It is the foundation for students to learn math in the future. It can be said that the cultivation of computing abilities is an important part of elementary mathematics teaching. However, the survey found that current primary school students’ computing power is worrying. Mainly as follows: the decline of computing power, estimation and estimation of the loss of ability to reduce the interest in computing, mathematics thinking ability not due