999.3-998.2+997.3-996.2+...+3.3-2.2+1.3-0.2

999.3-998.2+997.3-996.2+...+3.3-2.2+1.3-0.2 简算999.3-998.2+997.3-996.2+...3.3-2.2+1.3-0.2 999.3-998.2+997.3-996.2+.+3.3-2.2+1.3-0.2 999.3-998.2+997.3-996.2+.+3.3-2.2+1.3-0.2,等于多少? 999.3-998.2+997.3-996.2+...3.3-2.2+1.3-0.2 999.3-998.2+997.3-996.2+...3.3-2.2+1.3-0.2 999.3-998.2+997.3-996.2+…+3.2-2.2+1.3-0.2简算,速求 999.3—998.2+997.3—996.2+………+3.3—2.2+1.3—0.2 计算题3道急,用简便方法算1.1又1/2+2又1/6+3又1/12+…+10又1/1102.999.3-998.2+997.3-996.2+…+3.3-2.2+1.3-0.23.1/2+1/3+2/3+1/4+2/4+3/4+…1/101+2/101+…+100/101 9.3/4+99.3/4+999.3 巧算 99×99+99×99 99*99-99巧算 99+99+99= 99*99+99+99*99简便运算 99*99*99+99*99简便算法 99+99+99+99+99+99+99+99+99+99等于多少 99＋99×99+99×99×99简便运算 99*99%+99% 简便算法