KILLER UNCAGED

These Killer Sudoku puzzles have had the outlines of their cages removed, but the original rules apply, so that each row, column and 3×3 block should contain the digits 1-9. The sum of the digits for each missing cage is located, as usual, in the leftmost cell of the top row of that cage. No digit can be repeated within a cage, and there are no single cell cages.