数学人教版五年级上循环小数练习ppt课件.ppt

, 循环小数练习, : 2- ,2 2 2, 2 .,33,5.33, 3 .,4545,5 6 5 6 5, 5 6 ., 4 5 .,0.24545, ., .,0.999 6.4164163.1415926 0.5477455.02727,2323.1 3.21212 1.6025, .( ),5,7,7.3,7.28,4.891,7.275,4.89,4.9,1- , :,0.3757 0.417417 1.66666 5.7234242 3.161616 4.3737 1.1380413804 5.00505,2-, .( ),1.306306=1.306。 （ ）, 921 . ( )9.219219 , .( ) 0.666 ,3-, .,2.499,7.518518,42.51212,8.0479479,4.55 4.5 1.62 1.62222.35 2.53 1.12 1.1289 0.8 56 0.83,4-, ., .,=,6.54、 6.5454、 6.5444、 6.54、6.545 .,