(1)1000又999分之998X999 (2)99又999分之998X999简便运算,
问题描述:
(1)1000又999分之998X999 (2)99又999分之998X999简便运算,
答
(1)1000又999分之998×999
=(1000+998/999)×999
=999×1000+998/999×999
=999000十998
=999998
(2)99又999分之998×999
=(100-1/999)×999
=100×999-1
=99899