What is the scoring system in tennis including add and deuce?

Answer 1

It starts as love-all (0-0,) then if one person gets the point it is 15-love (you always say your score first. If that same person gets another point the score is 30-love (2-0,) and if the same person scores again the score is 40-love (4-0.) If you are tied you say the score, and then say "all." For example 30-all (2-2.) In ad-scoring the initial score is "deuce," if you win the point, you say "as-in." If you lose the point you say, "ad-out." If you are tied during ad, you will say "ad-all." I know it's a little confusing, you'll get used to it.