论文部分内容阅读
《新课程标准》强调发展同学们的数感,培养同学们的估算能力.提高估算能力,必须掌握一定的方法,下面介绍几种常用的估算方法.一、直觉估算直觉估算就是利用直觉进行估算解题. 例1将1-8和0-9这两组数字分别填入下式(1)和(2)的方框内,使其差(大减小)最小.
The “New Curriculum Standards” emphasizes the development of students’ sense of number and the training of students’ estimation ability. To improve the estimation ability, we must master certain methods. Here are some common estimation methods. Intuition estimation Intuition estimation is the use of intuition to estimate Solve the problem. Example 1 Fill in the two groups of numbers 1-8 and 0-9 into the boxes of equations (1) and (2) below to minimize the difference (large reduction).