90:25 =18:5=3.6
25:4.5 =50:9=5又5/9
2.7:0.81=10:3=3又1/3
90:25 25:4.5 2.7:0.81求比值
90:25 =18:5
25:4.5 =5:0.9=50:9
2.7:0.81=1:0.3=10:3
如图
90:25
=90÷25
=3.6
25:4.5
=25÷4.5
=50/9
2.7:0.81
=2.7÷0.81
=10/3
90:25
=90÷25
=3.6
25:4.5
=25÷4.5
=50/9
=4又5/9
2.7:0.81
=2.7÷0.81
=10/3
=3又1/3