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用简便方法计算的习题(以下简称简算题)是小学数学的重要内容,其计算方法是小学生必须掌握的基本功。教师通过简算题的教学,不仅可以提高学生的计算能力,巩固所学知识;而且有助于激发学生学习数学的兴趣,活跃思维,开阔视野,增强灵活运用知识的能力。编拟简算题是一项比较复杂而细致的工作,题目千变万化,灵活性很大,没有特定的章法可循,需要教师在研究教材的基础上,独特构思,精心设计。一般地说,每道简算题宜侧重于解决一两个问题,使之真正成为锻炼思维的“体操”。本文就下列几个方面,试着编拟数例,以期抛砖引玉。
Exercises calculated by the simple method (hereinafter referred to as the simple question) is an important part of elementary mathematics, and its calculation method is a basic skill that pupils must master. Teachers can not only improve students' computing abilities and consolidate their knowledge, but also help to stimulate their interest in learning mathematics, active thinking, broaden their horizons and enhance their ability to use knowledge flexibly. The compilation of the thesis is a more complicated and meticulous work, subject to ever-changing and flexible, there is no specific rules and regulations to follow, the teachers need to study the textbook based on the unique ideas, well-designed. Generally speaking, each simple budget should focus on solving one or two problems, making it a real “gymnastics” for exercising thinking. This article on the following aspects, try to prepare a few cases, with a view to start a discussion.