问题
解答题
化简下面各比.
|
答案
(1)0.15:0.3,
=
:3 20
,3 10
=(
×20):(3 20
×20),3 10
=3:6,
=(3÷3):(6÷3),
=1:2;
(2)
:7 8
,3 4
=(
×8):(7 8
×8),3 4
=7:6;
(3)
:0.625,1 8
=
:1 8
,5 8
=(
×8):(1 8
×8),5 8
=1:5.
化简下面各比.
|
(1)0.15:0.3,
=
:3 20
,3 10
=(
×20):(3 20
×20),3 10
=3:6,
=(3÷3):(6÷3),
=1:2;
(2)
:7 8
,3 4
=(
×8):(7 8
×8),3 4
=7:6;
(3)
:0.625,1 8
=
:1 8
,5 8
=(
×8):(1 8
×8),5 8
=1:5.