问题
解答题
先化成最简整数比,再求比值. 6:18 0.35:0.45
|
答案
(1)6:18,
=(6÷6):(18÷6),
=1:3;
6:18,
=1:3,
=1÷3,
=
;1 3
(2)0.35:0.45,
=(0.35×20):(0.45×20),
=7:9;
0.35:0.45,
=7:9,
=7÷9,
=
;7 9
(3)
:1 3
,1 6
=(
×6):(1 3
×6),1 6
=2:1;
:1 3
,1 6
=2:1,
=2÷1,
=2.