1/5,1/8,1/4,3/4,3/8,4/25,1/25化成分数化小数是
0.2,0.125,0.25,0.75,0.375,0.16,0.04过程1/5= 1÷5 = 0.21/8= 1÷8 = 0.1251/4= 1÷4 = 0.25,3/4= 3÷4 = 0.75,3/8= 3÷8 = 0.375,4/25= 4÷25 = 0.16,1/25= 1÷25 = 0.043/8[= ]0.375, 0.9[= ]9/10,49/54=0.90740740740741[大于]0.6 0.22[小于]11/49 =0.22448979591837 1/2[大于 ]0.47/8[大于 ]1/4填大于，小于等于