13.75X8⼀5一2.78X8⼀5一8⼀5怎样简便?

2025-04-07 15:49:04
推荐回答(2个)
回答1:

简便计算
13.75X8/5一2.75X8/5一8/5
=(13.75-2.75-1)x8/5
=10x8/5
=16

回答2:

13.75×8/5-2.78×8/5-8/5
=8/5×(13.75-2.78-1)
=8/5×9.97
=15.952