Arithmetic Operator Puzzles

4617 puzzles total. Find the missing + − × ÷ operators to complete each equation.

#4609: 9 _ 9 _ 6 _ 4 = 15 hard #4610: 9 _ 9 _ 6 _ 8 = -3 medium #4611: 9 _ 9 _ 6 _ 2 = 13 hard #4612: 9 _ 9 _ 6 _ 3 = 19 hard #4613: 9 _ 9 _ 7 _ 2 = 15 hard #4614: 9 _ 9 _ 8 _ 4 = -9 hard #4615: 9 _ 9 _ 8 _ 6 = -3 medium #4616: 9 _ 9 _ 8 _ 2 = 17 hard #4617: 9 _ 9 _ 9 _ 2 = 19 hard