6.50÷0.27=24.074074…得数保留一位小数是 ,保留两位小数是 .
0.375=== :64= %
( )+= ×=÷ = ﹣= :4=0.5.
÷ ==30: =1.2= %.
÷5=1.2==30: .
+=0.8= : = %