18×7+6×39怎样简便计算?

2025-04-04 14:47:34
推荐回答(2个)
回答(1):

18×7+6×39
=18×7+6×3×13
=18×7+18×13
=18×(7+13)
=18×20
=360

回答(2):

=3×6×7+6×39
=6×(21+39)
=6×60
=360