有3e:|8v-Y9{8e(S1H9@3W9g2c5J个:I'}(v3d2B，可以写成加法算式;d;M:[']7?2H4r+w0I.@，也可以写成乘法算式:[+Y.k-O:F'F,X*E;^9J*Q×6Y:\3I4e5[)L,E=(P6b0Z*n,S8N4v:o4E.F，*c6C;U8u4C和0p9o.B)F:@是因数，积是/z7D4V;M.u;q'i4R:x+d*q7i1V0M8J1P)t8e:d/X5D(e1f)s4x*X