简便0.999×1.3-0.111×2.7_数学解答

简便0.999×1.3-0.111×2.7

人气：264 ℃　时间：2020-04-04 21:26:00

解答

0.999*1.3-0.111*2.7
=0.999*1.3-0.111*9*0.3
=0.999*1.3-0.999*0.3
=0.999*(1.3-0.3)
=0.999*1
=0.999