301×19-19怎么巧算

301×19-19怎么巧算
2024-12-29 01:21:01
推荐回答(2个)
回答1:

301×19-19
=19×(301-1)
=19×300
=5700

回答2:

301x19-19
=(301-1)x19
=300x19
=5700