简便1.65乘43加1065乘57
问题描述:
简便1.65乘43加1065乘57
答
1.65*43+1065*57
=1.65*(100-57)+1065*57
=165-1.65*57+1065*57
=165+1065*57-1.65*57
=165+(1065-1.65)*57
=165+1063.35*57
=60775.95