:
2.5
0.24:0.080.36:0.45 2

64:6
10
:
1.5:
40 31
:4解:
:
=
÷
=
×4=
,0.36:0.45=0.36÷0.45=
,
=600÷1.5=400,1.5:
=1.5÷
=1.5×
=2.5,0.24:0.08=0.24÷0.08=3,
64:6=64÷6=10
,
:
=
÷
=
×
=
,1
:4=
÷4=
×
=
.
分析:先化简比,再连线.在化简比时,用比的前项除以后项即可.
点评:此题考查了比的化简:用比的前项除以后项,是分数的要化成最简分数.