题目内容
求比值.
:
; 2.45:1.4; 1.25:0.25;
:
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| 5 |
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考点:求比值和化简比
专题:简易方程
分析:求比值是根据比的意义(两个数相除又叫两个数的比),用比的前项除以比的后项.
解答:
解:(1)
:
=
÷
=
×
=
;
(2)2.45:1.4
=2.45÷1.4
=1.75;
(3)1.25:0.25
=1.25÷0.25
=5;
(4)
:
=
÷
=
×
=
.
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| 2 |
| 5 |
=
| 2 |
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| 5 |
=
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=
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(2)2.45:1.4
=2.45÷1.4
=1.75;
(3)1.25:0.25
=1.25÷0.25
=5;
(4)
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| 15 |
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=
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=
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=
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点评:此题主要考查了求比值的方法,注意求比值的结果是一个商,可以是整数、小数或分数.
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