Arithmetic Operator Puzzles

#3025: 6 _ 6 _ 7 _ 3 = -8 medium #3026: 6 _ 6 _ 7 _ 2 = 15 hard #3027: 6 _ 6 _ 8 _ 4 = 9 medium #3028: 6 _ 6 _ 8 _ 4 = -6 medium #3029: 6 _ 6 _ 8 _ 2 = 9 easy #3030: 6 _ 6 _ 8 _ 2 = 17 hard #3031: 6 _ 6 _ 9 _ 3 = 8 medium #3032: 6 _ 6 _ 9 _ 6 = 2 easy #3033: 6 _ 6 _ 9 _ 1 = 5 easy #3034: 6 _ 6 _ 9 _ 2 = 6 medium #3035: 6 _ 6 _ 9 _ 3 = 1 easy #3036: 6 _ 6 _ 9 _ 4 = 8 medium #3037: 6 _ 6 _ 9 _ 4 = 16 hard #3038: 6 _ 6 _ 9 _ 4 = 1 easy #3039: 6 _ 6 _ 9 _ 5 = 9 medium #3040: 6 _ 6 _ 9 _ 5 = -1 easy #3041: 6 _ 6 _ 9 _ 5 = 20 hard #3042: 6 _ 6 _ 9 _ 7 = 11 hard #3043: 6 _ 6 _ 9 _ 7 = -3 medium #3044: 6 _ 6 _ 9 _ 8 = 12 hard #3045: 6 _ 6 _ 9 _ 8 = -4 medium #3046: 6 _ 6 _ 9 _ 9 = -5 medium #3047: 6 _ 7 _ 2 _ 4 = 20 hard #3048: 6 _ 7 _ 2 _ 4 = -8 medium #3049: 6 _ 7 _ 2 _ 2 = 19 hard #3050: 6 _ 7 _ 2 _ 4 = 17 hard #3051: 6 _ 7 _ 2 _ 6 = 15 hard #3052: 6 _ 7 _ 2 _ 7 = 14 medium #3053: 6 _ 7 _ 2 _ 8 = 13 hard #3054: 6 _ 7 _ 2 _ 9 = 12 hard #3055: 6 _ 7 _ 3 _ 6 = -8 medium #3056: 6 _ 7 _ 3 _ 9 = 14 hard #3057: 6 _ 7 _ 3 _ 1 = 13 medium #3058: 6 _ 7 _ 3 _ 2 = 16 hard #3059: 6 _ 7 _ 3 _ 3 = 17 hard #3060: 6 _ 7 _ 3 _ 3 = 11 medium #3061: 6 _ 7 _ 3 _ 4 = 18 hard #3062: 6 _ 7 _ 3 _ 4 = 10 medium #3063: 6 _ 7 _ 3 _ 5 = 19 hard #3064: 6 _ 7 _ 3 _ 5 = 9 easy #3065: 6 _ 7 _ 3 _ 7 = 7 easy #3066: 6 _ 7 _ 3 _ 8 = 6 easy #3067: 6 _ 7 _ 4 _ 2 = 20 hard #3068: 6 _ 7 _ 4 _ 8 = 20 hard #3069: 6 _ 7 _ 4 _ 2 = -8 medium #3070: 6 _ 7 _ 4 _ 8 = -8 medium #3071: 6 _ 7 _ 6 _ 3 = 20 hard #3072: 6 _ 7 _ 6 _ 3 = -8 medium