王师傅加工了99个零件,经检验全部合格,合格率是99%. .
÷7=÷ =38.
× =× = ×= ×0.1=+ = ﹣.
× =× =+ =1.5× =× =1.
× =3600 × =3600 × =3600 × =3600 × =3600.
× = ÷=+ =1.