2米长的铁丝,平均分成6段,每段占全长的 ﹙填分数﹚,每段长 .
3:4==24÷ = %= .(填小数)
75÷ == .
= :10=0.2=10÷ = %.
0.09:==4÷ = %.
:6=5÷ =50%