常见分数和小数的互换= 0.51 = 0.25- = 0.751 = 0.224452= 0.43- = 0.6- = 0.81 = 0,125555838= 0.375-=0.625 87- = 0.875 81131= 0.5- = 0.25- = 0.75- = 0.224452= 0.43- = 0.6- = 0.81 = 0,12555583= 0.375-=0.6257- = 0.875888= 0.51 = 0.25- = 0.751 = 0.224452= 0.4- = 0.6- = 0.8- = 0.125555838= 0.375-=0.625 87- = 0.875 81131 = 0.2= 0.5- = 0.25- = 0.7524452= 0.43- = 0.6- = 0.81 = 0,125555838= 0.375-=0.625 87- = 0.875 8 1/11/1