0.9999×0.7+0.1111×2.7
=0.9999×0.7+0.9999×0.3
=0.9999×(0.7+0.3)
=0.9999×1
=0.9999
所以,可以通过上面的简便计算,得到答案是0.9999。
=0.1111×6.3+0.1111×2.7
=0.1111×(6.3+2.7)=0.9999
0.9999×0.7+0.1111×2.7
=0.1111×9×0.7+0.1111×2.7
=0.1111×6.3+0.1111×2.7
=0.1111×(6.3+2.7)
=0.1111×9
=0.9999