666×333+778×999 用简便方法怎么计算

2024-11-06 14:44:48
推荐回答(3个)
回答1:

666×333+778×999
=(222×3)×333+778×999
=222×(3×333)+778×999
=222×999+778×999
=(222+778)×999
=1000×999
=999000

回答2:

333x(666+778x3)=999x(222+778)=999+1000=999000

回答3:

666x333+778x999
=(222x3)x333+778x999
=222x(3x333)+778x999
=222x999+778x999
=999x(222+778)
=999x1000
=999000