314/100-3.14*4/5+3/100*3.14简便计算

问题描述:

314/100-3.14*4/5+3/100*3.14简便计算

  314/100-3.14*4/5+3/100*3.14
 =3.14(100/100-4/5+3/100)
  =3.14x0.23
  =0.7222