论文部分内容阅读
解决数学问题,尤其是解决生活中的一些数学问题,需要灵活运用所学的数学知识,否则就会出现错误。本文试图通过对三个相关问题的讨论,说明“活学活用”数学知识的重要性。问题1在1-150这150个整数中:(1)是3的倍数的数有几个?(2)是5的倍数的数有几个?(3)既是3的倍数又是5的倍数的数有几个?(4)是3的倍数或是5的倍数的数有几个?分析前三个小问题都比较简单。通过简单计算就可以知道:在1—150这150个整数中,是3的倍
To solve math problems, especially to solve some math problems in life, we need to make use of the maths we have learned. Otherwise, mistakes will be made. This article attempts to explain the importance of “learning by doing” mathematical knowledge by discussing three related questions. Question 1 Among the 150 integers from 1 to 150: (1) What is the number of multiples of 3? (2) What is the number of multiples of 5? (3) Both multiples of 3 and multiples of 5 (4) is a multiple of 3 or a multiple of 5? Analysis of the first three small problems are relatively simple. By simple calculation, we can see that in the 150 integer from 1 to 150, it is 3 times