先化简比,再求比值: 6.4:8= 1/6:2/3= 0.375:0.625= 8:8/9=
问题描述:
先化简比,再求比值:
6.4:8=
:1 6
=2 3
0.375:0.625=
8:
= 8 9
答
6.4:8=64:80=4:5,
6.4:8=4;5=0.8;
:1 6
=1:4,2 3
:1 6
=1:4=0.25;2 3
0.375:0.625=
:3 8
=3:5,5 8
0.375:0.625=3:5=0.6;
8:
=72:8=9:1.8 9
8:
=9:1=9.8 9
故答案为:4:5,0.8;1:4,0.25;3:5,0.6;9:1,9.