简便计算4.69*8.92+89.2*0.527+892*0.4
问题描述:
简便计算4.69*8.92+89.2*0.527+892*0.4
答
=8.92*(4.69+5.72+40)
=8.92*10.4+40)
=8.92*50.4
=8.92*50+8.92*0.4
=409.568