把36缩小为原来的是0.036;把0.078的小数点去掉,所得的数是原数的 倍.
÷10=0.8= : == %
÷ =0.375== :32= %
2:5= :10=10÷ = (填小数)
0.4= : =10: = :35= %
=20÷ =8: =0.8= %= .