Arithmetic Operator Puzzles

#2449: 5 _ 6 _ 4 _ 8 = 17 hard #2450: 5 _ 6 _ 4 _ 3 = -3 easy #2451: 5 _ 6 _ 4 _ 8 = 2 easy #2452: 5 _ 6 _ 4 _ 2 = 2 easy #2453: 5 _ 6 _ 4 _ 6 = -4 easy #2454: 5 _ 6 _ 4 _ 8 = -7 medium #2455: 5 _ 6 _ 4 _ 2 = 15 medium #2456: 5 _ 6 _ 5 _ 3 = -5 easy #2457: 5 _ 6 _ 5 _ 2 = 12 easy #2458: 5 _ 6 _ 5 _ 2 = 3 easy #2459: 5 _ 6 _ 5 _ 3 = 18 medium #2460: 5 _ 6 _ 5 _ 3 = 2 easy #2461: 5 _ 6 _ 6 _ 4 = 14 medium #2462: 5 _ 6 _ 6 _ 9 = 9 medium #2463: 5 _ 6 _ 6 _ 4 = -4 easy #2464: 5 _ 6 _ 6 _ 9 = 1 easy #2465: 5 _ 6 _ 6 _ 9 = 20 hard #2466: 5 _ 6 _ 7 _ 3 = 19 hard #2467: 5 _ 6 _ 7 _ 3 = -9 medium #2468: 5 _ 6 _ 8 _ 4 = 17 hard #2469: 5 _ 6 _ 8 _ 4 = 8 medium #2470: 5 _ 6 _ 8 _ 4 = -7 medium #2471: 5 _ 6 _ 8 _ 4 = 2 easy #2472: 5 _ 6 _ 8 _ 3 = 20 hard #2473: 5 _ 6 _ 9 _ 3 = 7 medium #2474: 5 _ 6 _ 9 _ 6 = 9 medium #2475: 5 _ 6 _ 9 _ 6 = 1 easy #2476: 5 _ 6 _ 9 _ 3 = 10 medium #2477: 5 _ 6 _ 9 _ 6 = 20 hard #2478: 5 _ 6 _ 9 _ 2 = 15 hard #2479: 5 _ 7 _ 2 _ 4 = 19 hard #2480: 5 _ 7 _ 2 _ 4 = -9 medium #2481: 5 _ 7 _ 3 _ 6 = 19 hard #2482: 5 _ 7 _ 3 _ 6 = -9 medium #2483: 5 _ 7 _ 4 _ 2 = 19 hard #2484: 5 _ 7 _ 4 _ 8 = 19 hard #2485: 5 _ 7 _ 4 _ 2 = -9 medium #2486: 5 _ 7 _ 4 _ 8 = -9 hard #2487: 5 _ 7 _ 5 _ 2 = 14 medium #2488: 5 _ 7 _ 6 _ 3 = 19 hard #2489: 5 _ 7 _ 6 _ 3 = -9 medium #2490: 5 _ 7 _ 8 _ 4 = 19 hard #2491: 5 _ 7 _ 8 _ 4 = -9 hard #2492: 5 _ 8 _ 2 _ 4 = 9 medium #2493: 5 _ 8 _ 2 _ 4 = 1 easy #2494: 5 _ 8 _ 2 _ 3 = -7 medium #2495: 5 _ 8 _ 2 _ 4 = 20 hard #2496: 5 _ 8 _ 2 _ 1 = 19 hard