0.654+10.9*6.5= 怎么简便运算 不要发图

2024-11-25 04:17:41
推荐回答(2个)
回答1:

0.654+10.9*6.5
=0.1*(6.5+0.04)+10.9*6.5
=(10.9+0.1)*6.5+0.004
=(10+1)*6.5+0.004
=65+6.5+0.004
=71.504,
这是简便运算的。

回答2:

0.654+10.9*6.5
=0.004+0.65+109*0.65
=0.004+(1+109)*0.65
=0.004+110*0.65
=0.004+65*(1+0.1)
=0.004+65+6.5
=71.504