Don't you round down in D&D/d20? Wouldn't it be CR2 + 1.5 + 3 = 6.5 = 6?Thanee said:CR 7 is right (by the book).
Bugbears are CR 2 and have 3 HD, so adding the first 3 levels of Sorcerer (unassociated class levels) increases CR by +0.5 each, to 4 (3.5 actually, but there are no half-steps), then each additional level counts full towards CR (they are associated class levels at this point).