2016乘201 7.2017减2017乘201 6.2016简便计算 6.7-( 2017又2016/2017-2011.3)简便...

201.7\u00d72016.2016-201.6\u00d72017.2017=?\u7684\u8fc7\u7a0b

201.7\u00d72016.2016-201.6\u00d72017.2017
=(201.6+0.1)\u00d72016.2016-201.6\u00d72017.2017
=201.6\u00d72016.2016+0.1\u00d72016.2016-201.6\u00d72017.2017
=201.6\u00d72016.2016-201.6\u00d72017.2017+201.62016
=201.6\u00d7(2016.2016-2017.2017)+201.62016
=201.6\u00d7(-1.0001)+201.62016
=-201.62016+201.62016
=0

6.7-( 2017\u53c82016/2017-2011.3)
= 6.7-( 2017+ 2016/2017 - 2011- 0.3)
= \uff086.7+0.3\uff09-( 2017-2011\uff09- 2016/2017
= 7-6-2016/2017
= 1- 2016/2017
= 1/2017

简便计算
2016×2017.2017-2017×2016.2016
=2016×2017×1.0001-2017×2016×1.0001
=0

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