计算:0.999×1.3-0.111×1.7 (简便计算)

问题描述:

计算:0.999×1.3-0.111×1.7 (简便计算)

0.999×1.3-0.111×1.7=0.111×9×1.3-0.111×1.7=0.111×11.7-0.111×1.7=
0.111×(11.7-1.7)=0.111×10=1.11