2017×2016⼀2015 = = =

2025-06-27 14:42:44
推荐回答(3个)
回答1:

2017×2016/2015
=2017×(1+1/2015)
=2017+2017/2015
=2018+2/2015
=2018又2/2015

回答2:

2017x2016/2015
=2017x(1+1/2015)
=2017+2017x1/2015
=2017+2017/2015
=2018又2/2015

回答3:

【速算】
2017×2016/2015
=(2015+2)x2016/2015
=2016+2x(2015+1)/2015
=2016+2+2/2015
=2018又2/2015