问题
解答题
化简下面的比,并求出比值. (1)0.5:1.25 (2)
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答案
(1)0.5:1.25,
=(0.5÷0.25):(1.25÷0.25),
=2:5,
0.5:1.25,
=0.5÷1.25,
=0.4;
(2)
千米:200米,1 2
=500米:200米,
=(500÷100):(200÷200),
=5:2,
千米:200米,1 2
=500米:200米,
=500÷200,
=2.5.