数学：看谁爬得快课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,算一算,0.260.6 =,811 =,0.1680.8 =,0.4333,0.7272,0.21,像,0.4333,、,0.7272,等等这样的小数叫循环小数。,算一算,0.260.6 =,811 =,0.1680.8 =,0.4333,0.7272,0.21,循环小数是无限的。其中小数部分重复出现的数字叫“,循环节,”。,找出循环小数,0.3999,8.5353,0.0168168,4.02030203,8.12121212,3.1415936535897,找出下列小数的循环节,0.4666,7.12424,0.0201201,4.412031203,用简便形式写出下列循环小数,0.4666,7.12424,0.0201201,4.412031203,= 0.46,.,= 7.124,. .,= 0.0201,. .,= 4.41203,. .,用简便形式写出下面各循环小数,3.2424 =,3.301301=,2.152152 =,0.1168168=,5.417461746=,. .,3.24,. .,3.301,. .,2.152,. .,0.1168,. .,5.41746,从图中你能得到哪些数学信息?,那你能提出数学问题吗?,循环小数,0.85,10060=1.666(,千米,),1.67(,千米,),算一算,找出它们的循环节,0.160.9 =,0.241.1 =,814 =,