\(=\frac{2008+2009.2010}{2010.\left(2009+2\right)-2012}\)
\(=\frac{2009.2010+2008}{2010.2009+2010.2-2012}\)
\(=\frac{2008+2009.2010}{2008+2009.2010}=1\)
Tính nhanh :
\(\frac{2010\cdot2011+1000}{2012\cdot2010-1010}\)
TÍNH BẰNG CÁCH HỢP LÝ:
\(\frac{2011\cdot2010-1}{2009\cdot2011+2010}\)
\(\frac{2009\cdot2009+2010}{2008\cdot2011+3}\)
tinh hop li\(\frac{2011\cdot2010-1}{2009\cdot2011\cdot2010}\)
\(\frac{2008+2009^{2010}}{2010^{2011}-2012}\)
Cho A = \(\frac{2000}{2001}+\frac{2001}{2002}+\frac{2002}{2003}+\frac{2003}{2004}+\frac{2005}{2006}+\frac{2006}{2007}+\frac{2007}{2008}+\frac{2008}{2009}+\frac{2009}{2010}+\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}+\frac{2013}{2014}+\frac{2014}{2015}+\frac{2015}{2016}\)
Hãy so sánh tổng các phân số trong A và so sánh với 15.
Tính nhanh:
\(\frac{2008\cdot2009+2000}{2009\cdot2010-2018}\)
tính bằng cách hợp lý:
\(\frac{2011\cdot2010-1}{2009\cdot1011+2010}\)
Tính nhanh:
\(\left(2012\cdot2010+2010\cdot2008\right)\cdot\left(1+\frac{1}{2}:1\frac{1}{2}-1\frac{1}{3}\right)\)
