13 Questions Adding Monomials – MATH Identify when two expressions are equivalent. For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands ... How many terms are in a monomial? 1 2 3 4+ Which of the following terms are monomials? A and C A, B, and C All of them B only Add the monomials. 25xy 20xy They cannot be added. 15xy … and 10 more awesome questions! Check them out by clicking “Play”.