问题
解答题
化简下列各比,并求比值.
8:0.04 2:
|
答案
(1)
:4 5
,2 3
=(
×15):(4 5
×15),2 3
=12:10,
=(12÷2):(10÷2),
=6:5;
:4 5
,2 3
=6:5,
=6÷5,
=1.2;
(2)8:0.04,
=(8×25):(0.04×25),
=200:1;
8:0.04,
=200:1,
=200÷1,
=200;
(3)2:
,4 7
=(2×7):(
×7),4 7
=14:4,
=(14÷2):(4÷2),
=7:1;
2:
,4 7
=7:1,
=7÷1;
=7.