99.99x22.22+33.33x33.34简便计算

分类: 作业答案 • 2022-01-01 11:39:28

问题描述：

答

99.99×22.22+33.33×33.34
=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为啥这样做