999×2.23+3.33×33.1的简便运算_数学解答

999×2.23+3.33×33.1的简便运算

人气：215 ℃　时间：2020-01-29 22:37:14

解答

99.9×2.23+3.33×33.1 好像错个小数点
=33.3×6.69+3.33×33.1
=3.33×66.9+3.33×33.1
=3.33×(66.9+33.1)
=3.33×100
=333