16.5⼀9.9+1.65简便法怎么算

2024-11-15 13:01:26
推荐回答(1个)
回答1:

16.5/9.9+1.65简便法怎么算
应该是乘法,除法就没有简便方法了
16.5*9.9+1.65
=16.5*9.9+16.5*0.1
=16.5*(9.9+0.1)
=16.5*10
=165

供参考