负五点二加正三点八减负一点二加正零点五加负零的七

2025-06-21 13:52:56
推荐回答(1个)
回答1:

  (-5.2)+(+3.8)-(-1.2)+(+0.5)+(-0.7)
  =3.8+1.2+0.5-0.7-5.2
  =5.5-5.9
  =-0.4