26.25+73.75*0.35+0.65*73.5用简便方法怎么算？明天就交了，急！急！急！急！急！
答案:4 悬赏:20 手机版
解决时间 2021-01-28 03:37
- 提问者网友：兔牙战士
- 2021-01-27 23:24
26.25+73.75*0.35+0.65*73.5用简便方法怎么算？明天就交了，急！急！急！急！急！
最佳答案
- 五星知识达人网友：梦中风几里
- 2021-01-28 00:10
如果最后一个是73.75：
26.25+73.75*0.35+0.65*73.75=26.25+73.75*(0.35+0.65)
=26.25+73.75*1
=100
如果最后一个是73.5：
26.25+73.75*0.35+0.65*73.5=26.25+73.75*0.35+0.65*（73.75-0.25）
=26.25+73.75*0.35+0.65*73.75-0.65*0.25
=26.25+73.75*（0.35+0.65）-0.1625
=100-0.1625
=99.8375
26.25+73.75*0.35+0.65*73.75=26.25+73.75*(0.35+0.65)
=26.25+73.75*1
=100
如果最后一个是73.5：
26.25+73.75*0.35+0.65*73.5=26.25+73.75*0.35+0.65*（73.75-0.25）
=26.25+73.75*0.35+0.65*73.75-0.65*0.25
=26.25+73.75*（0.35+0.65）-0.1625
=100-0.1625
=99.8375
全部回答
- 1楼网友：狂恋
- 2021-01-28 03:56
题错了，最后一个数是73.75
- 2楼网友：等灯
- 2021-01-28 02:30
26.25+73.75*0.35+0.65*73.5
=26.25+73.75*(1-0.65)+0.65*73.5
=26.25+73.75-0.65*(73.75-73.5)
=100 -0.65*0.25
????????????????
=26.25+73.75*(1-0.65)+0.65*73.5
=26.25+73.75-0.65*(73.75-73.5)
=100 -0.65*0.25
????????????????
- 3楼网友：老鼠爱大米
- 2021-01-28 00:53
26.25+73.75*0.35+0.65*73.5
=100-73.75+73.75*(1-0.65)+0.65*73.5
=100-73.75+73.75-73.75*0.65+0.65*73.5
=100+0.65*(73.5-73.75)
=100-0.65*0.25
=100-0.1625
=99.8375
你的题目应该错了，73.5应该是73.75
=100-73.75+73.75*(1-0.65)+0.65*73.5
=100-73.75+73.75-73.75*0.65+0.65*73.5
=100+0.65*(73.5-73.75)
=100-0.65*0.25
=100-0.1625
=99.8375
你的题目应该错了，73.5应该是73.75
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