9.8*4.8+0.48简便计算
问题描述:
9.8*4.8+0.48简便计算
答
=98*0.48+0.48=(98+1)0.48=99*0.48=(100-1)*0.48=48-0.48=47.52
9.8*4.8+0.48简便计算
=98*0.48+0.48=(98+1)0.48=99*0.48=(100-1)*0.48=48-0.48=47.52