9.810.1+98.10.5+981*0.49的简便运算

分类: 作业答案 • 2021-12-28 14:55:13

问题描述：

9.81*0.1+98.1*0.5+981*0.49的简便运算

答

9.81*0.1+98.1*0.5+981*0.49
=0.981*1+0.981*50+0.981*490
=0.981*（1+50+490）
=0.981*541
=530.721

9.81*0.1+98.1*0.5+981*0.49的简便运算