两组乘法是相加关系吗?如果是相加关系,将13提取出来:13×46+13×54=13×(46+54)=13×100=1300
解: 13X 46 =(10+3)X46 =10X46+3X46 =460+138 =598 13X54 =13X(50+4) =13X50+13X4 =650+52 =702