循环小数1.53737…用简便方法记是 ,这个数保留三位小数约是 ,保留两位小数约是 .
3:4==24÷ = %= .(填小数)
75÷ == .
= :10=0.2=10÷ = %.
0.09:==4÷ = %.
:6=5÷ =50%