67x105-67X5怎样简便计算

2025-03-31 07:57:22
推荐回答(2个)
回答1:

67x105-67X5怎样简便计算
67x105-67X5
=67X(105-5)
=67X100
=6700

回答2:

(67x5x21)-(67x5)x1
=67x5(21-1)
=67x5x20
=6700