简便计算:0.65*7.5-0.65*0.65
问题描述:
简便计算:0.65*7.5-0.65*0.65
答
0.65*7.5-0.65*0.65=0.65*(7.5-0.65)=0.65*6.85=4.4525
简便计算:0.65*7.5-0.65*0.65
0.65*7.5-0.65*0.65=0.65*(7.5-0.65)=0.65*6.85=4.4525