问题
解答题
求比值 20:600 0.45:1.5
|
答案
(1)20:600,
=20÷600,
=
;1 30
(2)0.45:1.5,
=0.45÷1.5,
=0.3;
(3)
:3 4
,1 2
=
÷3 4
,1 2
=
.3 2
求比值 20:600 0.45:1.5
|
(1)20:600,
=20÷600,
=
;1 30
(2)0.45:1.5,
=0.45÷1.5,
=0.3;
(3)
:3 4
,1 2
=
÷3 4
,1 2
=
.3 2