| 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.
编辑:chaxungu时间:2026-04-27 08:32:21分类:小学数学题库
| 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.
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