第1个回答 2015-03-02
2005÷2003/2004
=2005×2004/2003
=2005×(1+1/2003)
=2005+2005×1/2003
=2005+1又2/2003
=2006又2/2003
(7/20+20%-3/10)÷1%
=(7/20+20%-3/10)×100
=7/20×100+20%×100-3/10×100
=35+20-30
=25
(15/28×7/25+1/4)÷40%
=(3/20+1/4)÷0.4
=0.4÷0.4
=1
(3.7+17/3-5/3)÷0.11×0.03
=【3.7+(17/3-5/3)】÷0.11×0.03
=【3.7+4】÷0.11×0.03
=7.7÷0.11×0.03
=70×0.03
=2.1