简便0.999×1.3-0.111×2.7

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 21:15:38
简便0.999×1.3-0.111×2.7简便0.999×1.3-0.111×2.7简便0.999×1.3-0.111×2.70.999*1.3-0.111*2.7=0.999*1.3-0.111*9

简便0.999×1.3-0.111×2.7
简便0.999×1.3-0.111×2.7

简便0.999×1.3-0.111×2.7
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

0.999×1.3-0.111×2.7
=0.111×(9×1.3)-0.111×2.7
=0.111×11.7-0.111×2.7
=0.111×(11.7-2.7)
=0.111×9
=0.999