9.81*0.1+98.1*0.5+981*0.49的简便运算_数学解答

9.81*0.1+98.1*0.5+981*0.49的简便运算

人气：170 ℃　时间：2020-04-07 22:10:07

解答

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