0.8是由 个0.01组成,4里面有 个0.05,1.32×0.26的积精确到百分位约是 .
÷ =0.375== :32= %
2:5= :10=10÷ = (填小数)
0.4= : =10: = :35= %
=20÷ =8: =0.8= %= .
=3÷2=15: = %= (小数)