1/(2/3)/(3/4)/(4/5)/(5/6)=?能简算的要简算1.1997+1998+1999+2000+2001+2002+2003+2004== =2.138*5/4+23.3*(2-75%)-125%*38+(1+0.25)*28.7 ===3.2008/2008又2009分之2008+2010分之1== =打得好还加分加15哦
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1/(2/3)/(3/4)/(4/5)/(5/6)=?能简算的要简算1.1997+1998+1999+2000+2001+2002+2003+2004== =2.138*5/4+23.3*(2-75%)-125%*38+(1+0.25)*28.7 ===3.2008/2008又2009分之2008+2010分之1== =打得好还加分加15哦
1/(2/3)/(3/4)/(4/5)/(5/6)=?
能简算的要简算1.1997+1998+1999+2000+2001+2002+2003+2004
=
=
=
2.138*5/4+23.3*(2-75%)-125%*38+(1+0.25)*28.7
=
=
=
3.2008/2008又2009分之2008+2010分之1
=
=
=
打得好还加分
加15哦
1/(2/3)/(3/4)/(4/5)/(5/6)=?能简算的要简算1.1997+1998+1999+2000+2001+2002+2003+2004== =2.138*5/4+23.3*(2-75%)-125%*38+(1+0.25)*28.7 ===3.2008/2008又2009分之2008+2010分之1== =打得好还加分加15哦
1.=(1997+2003)+(1998+2002)+(1999+2001)+2004+2000
=4000+4000+4000+2000+2004
=16004
2.=138* 5/4 + 23.3* 5/4 + 38* 5/4 + 28.7* 5/4
=5/4 * (138+23.3+38+28.7)
=5/4 * (138+38+23.3+28.7)
=5/4 * 228
=285
3.=2008/(2008+2008/2009)+1/2010
=2008/[(2008*2009+2008)/2009] +1/2010
=2008/[(2008(2009+1)/2009]+1/2010
=2008/[(2010*2008) /2009]+1/2010
=2008* 2009/(2010*2008)+1/2010
=2009/2010+1/2010
=1
也怕看得懂了吧.这些题都很简单.其实你仔细思考一下应该都会的.以后关于数学还有什么问题,都可以问我.
1/(2/3)/(3/4)/(4/5)/(5/6)
=1*(3/2)*(4/3)*(5/4)*(6/5)
=1*3
=3
1997+1998+1999+2000+2001+2002+2003+2004
=(1997+2003)+(1998+2002)+(1999+2001)+2004+2000
=4000+4000+4000+2000+2004<...
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1/(2/3)/(3/4)/(4/5)/(5/6)
=1*(3/2)*(4/3)*(5/4)*(6/5)
=1*3
=3
1997+1998+1999+2000+2001+2002+2003+2004
=(1997+2003)+(1998+2002)+(1999+2001)+2004+2000
=4000+4000+4000+2000+2004
=16004
138*5/4+23.3*(2-75%)-125%*38+(1+0.25)*28.7
=138* 5/4 + 23.3* 5/4 + 38* 5/4 + 28.7* 5/4
=5/4 * (138+23.3+38+28.7)
=5/4 * (138+38+23.3+28.7)
=5/4 * 228
=285
2008/2008又2009分之2008+2010分之1
=2008/(2008+2008/2009)+1/2010
=2008/[(2008*2009+2008)/2009] +1/2010
=2008/[(2008(2009+1)/2009]+1/2010
=2008/[(2010*2008) /2009]+1/2010
=2008* 2009/(2010*2008)+1/2010
=2009/2010+1/2010
=1
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