问题
解答题
化简下列各比,并求出比值.
|
答案
3:2.5,
=(3×10):(2.5×10),
=30:25,
=(30÷5):(25÷5),
=6:5;
3:2.5,
=3÷2.5,
=1.2,
:2,2 5
=(
×2 5
):(2×5 2
),5 2
=1:5;
:2,2 5
=
:2,2 5
=0.2;
:5 6
,5 9
=(
×5 6
):(18 5
×5 9
),18 5
=3:2;
:5 6
,5 9
=
÷5 6
,5 9
=1.5;
0.75小时:15分,
=45分:15分,
=45:15,
=(45÷15):(15÷15),
=3:1;
0.75小时:15分,
=45分:15分,
=45÷15,
=3.