0.999×1.3－0.111×2.7等于几?_数学解答

0.999×1.3－0.111×2.7等于几?

人气：185 ℃　时间：2020-04-20 07:56:05

解答

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