| 求出下面各比的比值. 45:9= | 0.7:1.4= | : = | 18:27= |
| 0.21:2.1= | : = | 3:19= | 9.1:0.7= |
0.125: = | 81:3= | 1:0.7= | 0.25: = |
| 4:12= | 0.7:1= | : = |
| 解:45:9=5 | 0.7:1.4=0.5 | : =0.8 | 18:27=![]() |
| 0.21:2.1=0.1 | : =0.875 | 3:19=![]() | 9.1:0.7=13 |
0.125: =1 | 81:3=27 | 1:0.7=1![]() | 0.25: =![]() |
4:12=![]() | 0.7:1=0.7 | : =![]() |
分析:用比的前项除以比的后项来求比值.据此解答.
点评:本题主要考查了学生对求比值方法的掌握情况.
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