Arithmetic Operator Puzzles

#2881: 6 _ 4 _ 8 _ 6 = 3 easy #2882: 6 _ 4 _ 8 _ 1 = 4 easy #2883: 6 _ 4 _ 8 _ 2 = 1 easy #2884: 6 _ 4 _ 8 _ 3 = 6 easy #2885: 6 _ 4 _ 8 _ 3 = 1 easy #2886: 6 _ 4 _ 8 _ 4 = 7 easy #2887: 6 _ 4 _ 8 _ 4 = -1 easy #2888: 6 _ 4 _ 8 _ 5 = 8 medium #2889: 6 _ 4 _ 8 _ 5 = -2 easy #2890: 6 _ 4 _ 8 _ 6 = -3 easy #2891: 6 _ 4 _ 8 _ 7 = 10 medium #2892: 6 _ 4 _ 8 _ 7 = -4 medium #2893: 6 _ 4 _ 8 _ 8 = -5 medium #2894: 6 _ 4 _ 8 _ 9 = 12 hard #2895: 6 _ 4 _ 8 _ 9 = -6 medium #2896: 6 _ 4 _ 8 _ 1 = 13 hard #2897: 6 _ 4 _ 8 _ 2 = 10 medium #2898: 6 _ 4 _ 8 _ 3 = 4 easy #2899: 6 _ 4 _ 8 _ 4 = 16 hard #2900: 6 _ 4 _ 8 _ 4 = 3 easy #2901: 6 _ 4 _ 8 _ 5 = 17 hard #2902: 6 _ 4 _ 8 _ 6 = 6 easy #2903: 6 _ 4 _ 8 _ 6 = 2 easy #2904: 6 _ 4 _ 8 _ 7 = 19 hard #2905: 6 _ 4 _ 8 _ 7 = 5 easy #2906: 6 _ 4 _ 8 _ 8 = 20 hard #2907: 6 _ 4 _ 8 _ 8 = 4 easy #2908: 6 _ 4 _ 9 _ 6 = 12 hard #2909: 6 _ 4 _ 9 _ 3 = -6 medium #2910: 6 _ 4 _ 9 _ 6 = 16 hard #2911: 6 _ 4 _ 9 _ 6 = 1 easy #2912: 6 _ 5 _ 2 _ 4 = 16 medium #2913: 6 _ 5 _ 2 _ 4 = -4 easy #2914: 6 _ 5 _ 2 _ 6 = -9 medium #2915: 6 _ 5 _ 2 _ 3 = 20 hard #2916: 6 _ 5 _ 2 _ 4 = 15 medium #2917: 6 _ 5 _ 2 _ 2 = 17 hard #2918: 6 _ 5 _ 2 _ 2 = 13 medium #2919: 6 _ 5 _ 2 _ 3 = 18 hard #2920: 6 _ 5 _ 2 _ 4 = 11 easy #2921: 6 _ 5 _ 2 _ 5 = 10 easy #2922: 6 _ 5 _ 2 _ 7 = 8 easy #2923: 6 _ 5 _ 2 _ 9 = 6 medium #2924: 6 _ 5 _ 3 _ 6 = -4 easy #2925: 6 _ 5 _ 3 _ 9 = -9 hard #2926: 6 _ 5 _ 3 _ 9 = 10 medium #2927: 6 _ 5 _ 3 _ 1 = 11 easy #2928: 6 _ 5 _ 3 _ 2 = 8 easy