来自廖致刚的问题
【简便计算:99.99*22.22+33.33*33.34】
简便计算:99.99*22.22+33.33*33.34
1回答
2020-04-26 12:57
【简便计算:99.99*22.22+33.33*33.34】
简便计算:99.99*22.22+33.33*33.34
99.99×22.22+33.33×33.34
原式=(33.33×3)×22.22+33.33×33.34
=33.33×66.66+33.33×33.34
=33.33×(66.66+33.34)
=33.33×100
=3333