Arithmetic Operator Puzzles

#2641: 6 _ 2 _ 4 _ 4 = 19 hard #2642: 6 _ 2 _ 4 _ 2 = -5 easy #2643: 6 _ 2 _ 4 _ 3 = -9 medium #2644: 6 _ 2 _ 5 _ 4 = 15 medium #2645: 6 _ 2 _ 5 _ 2 = -7 easy #2646: 6 _ 2 _ 5 _ 2 = 17 hard #2647: 6 _ 2 _ 5 _ 4 = 19 hard #2648: 6 _ 2 _ 5 _ 5 = 20 hard #2649: 6 _ 2 _ 5 _ 5 = 10 easy #2650: 6 _ 2 _ 5 _ 7 = 8 easy #2651: 6 _ 2 _ 5 _ 9 = 6 medium #2652: 6 _ 2 _ 6 _ 4 = 9 easy #2653: 6 _ 2 _ 6 _ 4 = 3 easy #2654: 6 _ 2 _ 6 _ 3 = 14 medium #2655: 6 _ 2 _ 6 _ 6 = 13 medium #2656: 6 _ 2 _ 6 _ 6 = 11 easy #2657: 6 _ 2 _ 6 _ 8 = 9 easy #2658: 6 _ 2 _ 6 _ 9 = 8 easy #2659: 6 _ 2 _ 6 _ 4 = 8 easy #2660: 6 _ 2 _ 6 _ 5 = 10 easy #2661: 6 _ 2 _ 6 _ 7 = 14 medium #2662: 6 _ 2 _ 6 _ 8 = 16 hard #2663: 6 _ 2 _ 6 _ 2 = -9 medium #2664: 6 _ 2 _ 6 _ 9 = 2 easy #2665: 6 _ 2 _ 6 _ 8 = 4 easy #2666: 6 _ 2 _ 7 _ 7 = 11 medium #2667: 6 _ 2 _ 7 _ 2 = 19 hard #2668: 6 _ 2 _ 7 _ 4 = 17 hard #2669: 6 _ 2 _ 7 _ 6 = 15 hard #2670: 6 _ 2 _ 7 _ 7 = 14 medium #2671: 6 _ 2 _ 7 _ 9 = 12 hard #2672: 6 _ 2 _ 8 _ 2 = 16 hard #2673: 6 _ 2 _ 8 _ 4 = 14 hard #2674: 6 _ 2 _ 8 _ 8 = 13 hard #2675: 6 _ 2 _ 8 _ 8 = 11 medium #2676: 6 _ 2 _ 8 _ 2 = 3 easy #2677: 6 _ 2 _ 8 _ 6 = 9 easy #2678: 6 _ 2 _ 8 _ 2 = 19 hard #2679: 6 _ 2 _ 8 _ 5 = 19 hard #2680: 6 _ 2 _ 8 _ 6 = 4 easy #2681: 6 _ 2 _ 8 _ 7 = 17 hard #2682: 6 _ 2 _ 8 _ 8 = 16 hard #2683: 6 _ 2 _ 8 _ 9 = 15 hard #2684: 6 _ 2 _ 9 _ 3 = 12 hard #2685: 6 _ 2 _ 9 _ 6 = 3 easy #2686: 6 _ 2 _ 9 _ 9 = 13 hard #2687: 6 _ 2 _ 9 _ 9 = 11 hard #2688: 6 _ 2 _ 9 _ 3 = 4 easy