摘要
纯循环小数与混循环小数是初等数论中常讲解的内容,但怎样把此两类小数化为分数却没有讲解,通过利用中学的等比数列把纯循环小数和混循环小数化为分数,并给出了纯循环小数和混循环小数化为分数的计算公式。为中小学数学教师教学中,把循环小数化为分数提供了一个有力的计算公式。
Pure recurring decimals and mixed recurring decimals are commonly discussed in elementary number theory,but how to convert these two types of decimals into fractions is not explained.This article uses a high school proportional sequence to convert pure recurring decimals and mixed recurring decimals into fractions,and provides a calculation formula for converting pure recurring decimals and mixed recurring decimals into fractions.This provides a favorable calculation formula for converting recurring decimals into fractions in the teaching of mathematics teachers in primary and secondary schools.
作者
旷雨阳
王太荣
李兴华
KUANG Yuyang;WANG Tairong;LI Xinghua(College of Mathematics and Computer,Anshun University,Anshun 561000,Guizhou,China)
出处
《安顺学院学报》
2024年第1期111-114,共4页
Journal of Anshun University
基金
贵州省科技计划项目“基于数字全息的粗糙度高精度实时测量研究”(黔科合LH字〔2017〕7051)。
关键词
初等数论
等比数列
循环小数
计算公式
elementary number theory
equal ratio sequence
recurring decimals
calculation formula.
