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2018*2016/2017的简便计算

2018*2016/2017的简便计算 解:采用分配律, 原式=(2017+1)x2016/2017 =2017x2016/2017+2016/2017 =2016又2016/2017

计算: 2018x 2016/2017 =(2017+1)x2016/2017 =2016+2016/2017 =2016又2017分之2016

2017乘2018分之2017简便算法 =(2018-1)x2017/2018 =2018x2017/2018-2017/2018 =2017-2017/2018 =2016又1/2018

2O18╳2017一2017╳2016一2016╳2015+2015╳2014简便计算 解: 2O18×2017-2017×2016-2016×2015+2015×2014 =(2018-2016)×2017-(2016-2014)×2015 =2×2017-2×2015 =2×(2017-2015) =2×2 =4

2016×2018 =(2017-1)(2017+1) =2017²-1

2018分之2017乘以2016的简便方法是什么 2018分之2017乘以2016 =2016*(1-1/2018) =2016-1013/1014 =2015又1/1014

解:2019X2018-2018X2017-2017x2016+2016x2015 =2018*(2019-2017)-2016*(2017-2015) =2018*2-2016*2 =2*(2018-2016) =2*2 =4

2017*2018-2017*180简便方法 2017*2018-2017*180 =2017×(2018-180) =2017×1838 =3707246 说明:题目可能是2017*2018-2017*18

=(2013+2019)/2016+ (2014+2018)/2016+ (2015+2017)/2016+ 2016/2016 =2+2+2+1 =7

1/2014*2015 +1/2015*2016 +1/2016*2017 +1/2017*2018 =1/2014-1/2015+1/2015-1/2016+1/2016-1/2017+1/2017-1/2018 =1/2014-1/2018 =(2018-2014)/(2014*2018) =4/(2*1007*2*1009) =1/1007*1009 =1/1016063

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