Medium Arithmetic Puzzles

#2260: 5 _ 3 _ 6 _ 4 = 14 medium #2261: 5 _ 3 _ 6 _ 5 = 15 medium #2269: 5 _ 3 _ 7 _ 7 = 14 medium #2271: 5 _ 3 _ 8 _ 6 = 9 medium #2272: 5 _ 3 _ 8 _ 2 = -7 medium #2277: 5 _ 3 _ 8 _ 2 = 11 medium #2281: 5 _ 3 _ 9 _ 3 = 6 medium #2282: 5 _ 3 _ 9 _ 6 = 7 medium #2287: 5 _ 3 _ 9 _ 6 = 10 medium #2293: 5 _ 3 _ 9 _ 5 = 10 medium #2295: 5 _ 3 _ 9 _ 6 = 9 medium #2296: 5 _ 3 _ 9 _ 7 = 8 medium #2297: 5 _ 3 _ 9 _ 9 = 6 medium #2305: 5 _ 4 _ 2 _ 7 = -9 medium #2318: 5 _ 4 _ 2 _ 6 = 15 medium #2322: 5 _ 4 _ 3 _ 6 = 13 medium #2334: 5 _ 4 _ 5 _ 2 = 15 medium #2338: 5 _ 4 _ 6 _ 3 = 13 medium #2339: 5 _ 4 _ 6 _ 8 = 8 medium #2344: 5 _ 4 _ 6 _ 2 = 15 medium #2346: 5 _ 4 _ 7 _ 2 = -9 medium #2349: 5 _ 4 _ 8 _ 6 = 8 medium #2355: 5 _ 4 _ 8 _ 2 = 12 medium #2356: 5 _ 4 _ 8 _ 2 = 8 medium #2373: 5 _ 5 _ 2 _ 4 = 15 medium #2383: 5 _ 5 _ 3 _ 6 = 15 medium #2387: 5 _ 5 _ 3 _ 5 = 16 medium #2391: 5 _ 5 _ 4 _ 2 = 15 medium #2393: 5 _ 5 _ 4 _ 8 = -5 medium #2398: 5 _ 5 _ 5 _ 3 = 16 medium #2401: 5 _ 5 _ 6 _ 3 = 15 medium #2404: 5 _ 5 _ 8 _ 4 = -5 medium #2412: 5 _ 6 _ 2 _ 4 = 15 medium #2414: 5 _ 6 _ 2 _ 2 = 13 medium #2421: 5 _ 6 _ 3 _ 2 = 14 medium #2422: 5 _ 6 _ 3 _ 9 = 7 medium #2423: 5 _ 6 _ 3 _ 4 = 13 medium #2428: 5 _ 6 _ 3 _ 7 = -9 medium #2429: 5 _ 6 _ 3 _ 9 = 10 medium #2433: 5 _ 6 _ 3 _ 3 = 13 medium #2435: 5 _ 6 _ 3 _ 4 = 14 medium #2437: 5 _ 6 _ 3 _ 6 = 16 medium #2445: 5 _ 6 _ 4 _ 3 = 13 medium #2446: 5 _ 6 _ 4 _ 8 = 8 medium #2448: 5 _ 6 _ 4 _ 6 = 14 medium #2454: 5 _ 6 _ 4 _ 8 = -7 medium #2455: 5 _ 6 _ 4 _ 2 = 15 medium #2459: 5 _ 6 _ 5 _ 3 = 18 medium