数的运算是小学数学的重要学习内容。在小学数学学习中,运算占有较大的比重,学生需要花费较多的时间和精力去学习和掌握关于运算的知识与技能。《课程标准(2011年版)》指出,运算能力主要是指能够根据法则和运算律正确地进行运算的能力。而运算能力又不是一种孤立的、单一的数学能力,在运算的实施以及解决问题的过程中,都要求学习者善于分析数据特点,选择运算方法,使得运算过程合理简洁,体现数学的美感。因此, Counting is an important part of elementary mathematics. In primary school mathematics learning, computing occupy a larger proportion, students need to spend more time and effort to learn and master the knowledge and skills on computing. The Curriculum Standards (2011 Edition) states that computing power refers primarily to the ability to operate correctly on the basis of laws and algorithms. However, computing power is not an isolated and single mathematical ability. It requires learners to be good at analyzing the characteristics of data and selecting arithmetic methods, which makes the computing process reasonably concise and embodies the beauty of mathematics in the process of implementation and solution. therefore,