4.5*5.5+5.5*5.5怎么简便计算?4.5*5.5+5.5*5.5=(4.5+5.5)×5.5=10×5.5=55
5.5*(4.5+5.5)=5.5*10=55
4.5×5.5+5.5×5.4=5.5×(4.5+5.5)=5.5×10=55就这么简单
4.5*5.5+5.5*5.5=5.5*(4.5+5.5)=5.5*10=55请参考