333ᠧ666+778ᠧ999简便方法?

2025-03-04 16:03:29
推荐回答(2个)
回答1:

333✘666+778✘999
= 333x(666+778x3) 后者提取666也行 666x(333+388x3)
= 333x3000
= 999000

回答2:

333X666+778×999
=333×3X222+778×999
=999×222+778×999
=999×(222+778)
=999X1000
=999000