Arithmetic Operator Puzzles

#97: 1 _ 3 _ 4 _ 8 = 6 easy #98: 1 _ 3 _ 4 _ 9 = 12 medium #99: 1 _ 3 _ 5 _ 5 = 2 easy #100: 1 _ 3 _ 6 _ 9 = 3 easy #101: 1 _ 3 _ 6 _ 4 = 3 easy #102: 1 _ 3 _ 6 _ 9 = -1 easy #103: 1 _ 3 _ 6 _ 4 = -1 easy #104: 1 _ 3 _ 6 _ 8 = -3 easy #105: 1 _ 3 _ 6 _ 6 = 2 easy #106: 1 _ 3 _ 6 _ 2 = 9 easy #107: 1 _ 3 _ 6 _ 9 = 2 easy #108: 1 _ 3 _ 6 _ 8 = 4 easy #109: 1 _ 3 _ 6 _ 1 = 1 easy #110: 1 _ 3 _ 6 _ 3 = -1 easy #111: 1 _ 3 _ 6 _ 4 = -2 easy #112: 1 _ 3 _ 6 _ 5 = 7 easy #113: 1 _ 3 _ 6 _ 5 = 10 easy #114: 1 _ 3 _ 6 _ 6 = 8 easy #115: 1 _ 3 _ 6 _ 6 = -4 easy #116: 1 _ 3 _ 6 _ 7 = 9 easy #117: 1 _ 3 _ 6 _ 7 = -5 easy #118: 1 _ 3 _ 6 _ 7 = 14 medium #119: 1 _ 3 _ 6 _ 8 = -6 medium #120: 1 _ 3 _ 6 _ 8 = 16 hard #121: 1 _ 3 _ 6 _ 9 = 11 hard #122: 1 _ 3 _ 6 _ 9 = -7 hard #123: 1 _ 3 _ 7 _ 7 = 2 easy #124: 1 _ 3 _ 8 _ 4 = -5 medium #125: 1 _ 3 _ 8 _ 6 = -3 easy #126: 1 _ 3 _ 8 _ 2 = 7 easy #127: 1 _ 3 _ 8 _ 4 = 5 easy #128: 1 _ 3 _ 8 _ 2 = -1 easy #129: 1 _ 3 _ 8 _ 4 = 1 easy #130: 1 _ 3 _ 8 _ 8 = 2 easy #131: 1 _ 3 _ 8 _ 2 = 12 medium #132: 1 _ 3 _ 8 _ 6 = 4 easy #133: 1 _ 3 _ 8 _ 6 = 16 hard #134: 1 _ 3 _ 9 _ 3 = 2 easy #135: 1 _ 3 _ 9 _ 6 = 3 easy #136: 1 _ 3 _ 9 _ 6 = -1 easy #137: 1 _ 3 _ 9 _ 9 = 2 easy #138: 1 _ 3 _ 9 _ 6 = 2 easy #139: 1 _ 3 _ 9 _ 1 = 4 easy #140: 1 _ 3 _ 9 _ 1 = 2 easy #141: 1 _ 3 _ 9 _ 2 = 1 easy #142: 1 _ 3 _ 9 _ 2 = 6 easy #143: 1 _ 3 _ 9 _ 4 = 7 medium #144: 1 _ 3 _ 9 _ 4 = 12 medium