求124.68+324.68+524.68+724.68+924.68=?的简便计算,

问题描述:

求124.68+324.68+524.68+724.68+924.68=?的简便计算,

124.68+324.68+524.68+724.68+924.68
=100+300+500+700+900+24.68*5
=2500+123.4
=2623.4