简便计算:9.81*10%+1/2*98.1+0.049*981 (注:其中1/2分式)
问题描述:
简便计算:9.81*10%+1/2*98.1+0.049*981 (注:其中1/2分式)
答
9.81*10%+1/2*98.1+0.049*981
=98.1*0.01+0.5*98.1+0.49*98.1
=98.1*(0.01+0.5+0.49)
=98.1*1
=98.1