48*3.5+3.5*51+3.5 用简便方法做
问题描述:
48*3.5+3.5*51+3.5 用简便方法做
答
48*3.5+3.5*51+3.5 = 3.5*(48+51+1)=3.5*100=350
48*3.5+3.5*51+3.5 用简便方法做
48*3.5+3.5*51+3.5 = 3.5*(48+51+1)=3.5*100=350