找规律 455x7.6+111x15.2+32.3x76 5.6x69.32+138.64x0.05+693.2x0.43
问题描述:
找规律 455x7.6+111x15.2+32.3x76 5.6x69.32+138.64x0.05+693.2x0.43
答
455*7.6+111*2*7.6+32.3*10*7.6=7600
(5.6+0.05*2+4.3)*69.32=693.2