问题
解答题
|
答案
(1)
:2 5
,2 5
=(
÷2 5
):(2 5
÷2 5
),2 5
=1:1;
(2)
吨:750千克,2 5
=400千克:750千克,
=400:750,
=(400÷50):(750÷50),
=8:15.
|
(1)
:2 5
,2 5
=(
÷2 5
):(2 5
÷2 5
),2 5
=1:1;
(2)
吨:750千克,2 5
=400千克:750千克,
=400:750,
=(400÷50):(750÷50),
=8:15.