Complete the sentence using sum, difference, product, qoutient, or factor

1- The expression 20 + (8/2) is the _____ of 20 and (8/2). The expression 8/2is the _____ of 8 and 2.

2- The expression 11 x 6 has two ___, namley 11 and 6, because it is the _____ of those expressions.