题目内容
从
,0.5、
、4和0.6五个数中,选取其中四个数组成比例是
:0.5=
:0.6;
:
=0.5:0.6;
:0.6=
:0.5;
:
=0.6:0.5;
:0.5=
:0.6;
:
=0.5:0.6;
:0.6=
:0.5;
:
=0.6:0.5;.
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分析:利用比例的基本性质,即两内项之积等于两外项之积,即可选取合适的四个数,从而能得到正确的比例.
解答:解:因为
×0.6=0.5×
,
所以
:0.5=
:0.6;
:
=0.5:0.6;
:0.6=
:0.5;
:
=0.6:0.5;
故答案为:
:0.5=
:0.6;
:
=0.5:0.6;
:0.6=
:0.5;
:
=0.6:0.5;
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所以
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故答案为:
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点评:解答此题的关键是:利用比例的基本性质先找出这四个数,再把它们按照内项和外项写出比例即可.
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