(21.5-21)*25*0.5+25*0.4 等于多少

_think_so 2023-03-19 13:03

• 

  _smile_smile

  2023-03-19 14:02

  (21.5-21)*25*0.5+25*0.4 等于多少

  = 0.5 x 25 x 0.5 + 25 x0.4

  = 25 x 0.25 +25 x 0.4

  = 25 x (0.25+0.4)

  = 25 x 0.65

  = 65 x 0.25

  = 65 ÷4

  = 16.25

  (21.5-21)*25*0.5+25*0.4=0.5*25*0.5+10=7.5*0.5+10=3.75+10=13.75

  =0.5*25*0.5+25*0.4=1+10=11

  原式=0.5*25*0.5+25*0.4

  =25*0.25+25*0.4

  =25*(0.25+0.4)

  =25*0.65

  =16.25
  0 讨论(0)
  发布评论:

  提交评论

  ---

  •  加载中...