题目内容
求出下面各比的比值 6:= | 2.5:3.5= | 1.2:120= |
3.6:1= | 9:0.45= | := |
解:
(1)6:,
=6÷,
=18,
(2)2.5:3.5,
=2.5÷3.5,
=,
(3)1.2:120,
=1.2÷120,
=0.01,
(4)3.6:1,
=3.6÷1.5,
=2.4,
(5)9:0.45,
=9÷0.45,
=20,
(6):,
=÷,
=3.
分析:用比的前项除以比的后项来求比值.
点评:本题主要考查了学生对求比值方法的掌握.
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