99.99x22.22+33.33x33.34简便计算_数学解答

99.99x22.22+33.33x33.34简便计算

人气：477 ℃　时间：2020-05-24 12:44:35

解答

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