问题
解答题
|
答案
(1)2:2.8
=(2×2.5):(2.8×2.5)
=5:7;
(2)3:51 4
=(3×
):(54 3
×1 4
)4 3
=4:7;
(3)99 44
=(99÷11):(44÷11)
=9:4;
(4)6.24:2.1
=(6.24×
):(2.1×50 3
)50 3
=104:35;
(5)
:0.055 8
=(
×40):(0.05×40)5 8
=25:2.