Arithmetic Operator Puzzles

#2497: 5 _ 8 _ 2 _ 2 = 18 hard #2498: 5 _ 8 _ 2 _ 2 = 10 easy #2499: 5 _ 8 _ 2 _ 4 = 16 hard #2500: 5 _ 8 _ 2 _ 5 = 15 hard #2501: 5 _ 8 _ 2 _ 6 = 14 hard #2502: 5 _ 8 _ 2 _ 7 = 13 hard #2503: 5 _ 8 _ 2 _ 8 = 12 medium #2504: 5 _ 8 _ 2 _ 9 = 11 hard #2505: 5 _ 8 _ 3 _ 2 = 17 hard #2506: 5 _ 8 _ 3 _ 4 = 11 medium #2507: 5 _ 8 _ 3 _ 6 = 9 medium #2508: 5 _ 8 _ 3 _ 2 = -7 medium #2509: 5 _ 8 _ 3 _ 4 = -1 easy #2510: 5 _ 8 _ 3 _ 6 = 1 easy #2511: 5 _ 8 _ 3 _ 6 = 20 hard #2512: 5 _ 8 _ 4 _ 3 = 11 medium #2513: 5 _ 8 _ 4 _ 6 = 17 hard #2514: 5 _ 8 _ 4 _ 7 = 19 hard #2515: 5 _ 8 _ 4 _ 3 = -1 easy #2516: 5 _ 8 _ 4 _ 5 = -5 medium #2517: 5 _ 8 _ 4 _ 6 = -7 medium #2518: 5 _ 8 _ 4 _ 7 = -9 hard #2519: 5 _ 8 _ 4 _ 1 = 11 medium #2520: 5 _ 8 _ 4 _ 2 = 12 medium #2521: 5 _ 8 _ 4 _ 2 = 8 medium #2522: 5 _ 8 _ 4 _ 2 = 20 hard #2523: 5 _ 8 _ 4 _ 3 = 13 hard #2524: 5 _ 8 _ 4 _ 3 = 7 easy #2525: 5 _ 8 _ 4 _ 4 = 6 easy #2526: 5 _ 8 _ 4 _ 5 = 5 easy #2527: 5 _ 8 _ 4 _ 6 = 4 easy #2528: 5 _ 8 _ 4 _ 7 = 17 hard #2529: 5 _ 8 _ 4 _ 7 = 3 easy #2530: 5 _ 8 _ 4 _ 8 = 18 hard #2531: 5 _ 8 _ 4 _ 8 = 2 easy #2532: 5 _ 8 _ 4 _ 9 = 19 hard #2533: 5 _ 8 _ 4 _ 9 = 1 easy #2534: 5 _ 8 _ 4 _ 4 = 10 easy #2535: 5 _ 8 _ 5 _ 4 = 15 hard #2536: 5 _ 8 _ 5 _ 4 = -5 medium #2537: 5 _ 8 _ 5 _ 4 = 2 easy #2538: 5 _ 8 _ 6 _ 4 = 17 hard #2539: 5 _ 8 _ 6 _ 3 = 9 medium #2540: 5 _ 8 _ 6 _ 9 = 17 hard #2541: 5 _ 8 _ 6 _ 4 = -7 medium #2542: 5 _ 8 _ 6 _ 3 = 1 easy #2543: 5 _ 8 _ 6 _ 9 = -7 hard #2544: 5 _ 8 _ 6 _ 3 = 20 hard