作业帮100/2001x2002+100/2002x2003+100/2003x2004-|-(-100/2001-100/2004)|的计算过程
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100/2001x2002+100/2002x2003+100/2003x2004-|-(-100/2001-100/2004)|的计算过程
100/2001x2002+100/2002x2003+100/2003x2004-|-(-100/2001-100/2004)|的计算过程
100/2001x2002+100/2002x2003+100/2003x2004-|-(-100/2001-100/2004)|的计算过程
=100*(1/2001-1/2002+1/2002-1/2003+1/2003-1/2004)
=100*(1/2001-1/2004)=300/(2004*2001)
-100/2001-100/2004=-300/(2004*2001)
答案我看不用算也知道了吧!(-1)
100/2001x2002+100/2002x2003+100/2003x2004-|-(-100/2001-100/2004)|的计算过程
计算:a=2002+2001x2002+2001x2002^2+……+2001x2002^2001.好心的帮我解下.
2001x2003x(1/2001x2002+1/2002x2003)
用简便方法计算:2001^2-2000x2002
2000/2001x2002有没有简便方法,怎么写?
a=2001²+2001²x2002²+2002²证明完全平方急
2001x2003(2001x2002分之1+2002x2003分之1）=多少
2004x2003-2003x2002+2002x2001-2001x2000+...+2x1=多少,
2003x2002-2002x2001-2001x2000-2000x1999+.+3x2-2x1=?简便运算
-（-1/1x2-1/2x3-1/3x4-1/4x5-.-1/2001x2002）
用简便方法运算：2/(12x14)+2/(12x16)+2/(16x18)+1/20=（）456x797+456/(456x797)-456=（）2002x2002-2002+1/2002x2002-2002x2001+2001x2001=（）(7/3)x(12/7)x(11/9)x(14/9)x(3/11)x(23/12)x(81/23）=（）1+1/6+7/15+3/35+38/63+41/90=（）(244/3)x
观察1+3等于4.4+5等于9.9+7等于16.找出规律写2001X2001+（）=2002X2002
1/1x2+1/2x3+1/3x4+1/4x5...1/2001x2002 简便计算
计算2001x2002分之1+2002x2003分之1+2003x2004分之1+2004x2005分之1+2005分之=?
如何简便运算下列两道题：（1）20（1）20012001x2002-20022002x2001;(2)19931993x1994-19941994x1993
2004x2002/2003简便计算
六年级分数除法应用计算：1/1X2+1/2X3+1/3X4+1/4X5+.+1/2000X2001+1/2001X2002=?怎么简便
巧算,望聪明的人进来帮帮我忙~1X2X3X4X5X6X.2001X2002的末尾有__个连续的0?