415x32怎么验算
415*32怎么验算 -
原式=415x32 =415x4x8 =1660x8 =13180 验算:13180÷415 =32
415 × 32 = 13280 验算:32 × 415 = 13280 竖式见图:
原式=415x32 =415x4x8 =1660x8 =13180 验算:13180÷415 =32
415 × 32 = 13280 验算:32 × 415 = 13280 竖式见图: