把0.375扩大100倍是 ,把50缩小1000倍是 . 扩大100 倍是6.4.
18÷48=6: = :8== %
4: =0.4= ÷60== %.
18÷ == ÷125= [小数].
0.64=32÷ = (最简分数)
0.8== ÷ =.