2003×0.999-2004×0.998=_.

问题描述:

2003×0.999-2004×0.998=______.

2003×0.999-2004×0.998,
=2003×(1-0.001)-2004×(1-0.002)
=(2003-2.003)-(2004-4.008)
=2003-2.003-2004+4.008
=2003-2004-2.003+4.008
=1.005;
故答案为:1.005.