计算:20032003×2003-20032002×2002-20032002=______.
计算:20032003×2003-20032002×2002-20032002=______.
计算:5002-499×501=______.
计算:1232-122×124=______.
计算:1001×1001-1001=______.
简便计算:101×99=______.
计算:888×999=______.
计算:lg2+lg5=______.
计算:1.996+19.97+199.8=______.
计算5.762-4.242=______.
计算:57.32°=______度______分______秒.
计算:2005×2004-2004×2003+2003×2002-2002×2001+…+3×2-2×1=______.
计算:(2005+2003+2001+…+3+1)-(2+4+6+…+2002+2004)=______.