题目内容
求下面各比的比值.
5:8=
0.4:0.16=
:
=
0.5:
=
5:8=
0.4:0.16=
2 |
3 |
3 |
8 |
0.5:
3 |
10 |
分析:根据求比值的方法:用比的前项除以比的后项进行解答.
解答:解:(1)5:8
=5÷8,
=0.625;
(2)0.4:0.16,
=0.4÷0.16,
=2.5;
(3)
:
,
=
÷
,
=
;
(4)0.5:
,
=0.5÷
,
=
.
=5÷8,
=0.625;
(2)0.4:0.16,
=0.4÷0.16,
=2.5;
(3)
2 |
3 |
3 |
8 |
=
2 |
3 |
3 |
8 |
=
16 |
9 |
(4)0.5:
3 |
10 |
=0.5÷
3 |
10 |
=
5 |
3 |
点评:本题主要考查了学生对求比值方法的掌握情况,注意比值是一个数.
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