0.999×1.3-0.111×2.7等于几?

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 02:50:34
0.999×1.3-0.111×2.7等于几?
x)3г<3/-|n9ө]Ǧ lܑZHNAа23Ĕ24܏#Pm{: y&nID$

0.999×1.3-0.111×2.7等于几?
0.999×1.3-0.111×2.7等于几?

0.999×1.3-0.111×2.7等于几?
0.999x1.3-0.111x2.7
=0.111x11.7-0.111x2.7
=0.111x(11.7-2.7)
=0.111x9
=0.999

晕··不会用计算机算啊?

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×(9×1.3-2.7)=0.111×9=0.999

0.999