Medium Arithmetic Puzzles

#1232: 3 _ 4 _ 8 _ 9 = -3 medium #1235: 3 _ 4 _ 9 _ 3 = 9 medium #1241: 3 _ 5 _ 2 _ 2 = 16 medium #1242: 3 _ 5 _ 2 _ 2 = 14 medium #1244: 3 _ 5 _ 3 _ 6 = 13 medium #1247: 3 _ 5 _ 3 _ 3 = 16 medium #1252: 3 _ 5 _ 4 _ 8 = -7 medium #1253: 3 _ 5 _ 5 _ 5 = 16 medium #1254: 3 _ 5 _ 5 _ 5 = 14 medium #1256: 3 _ 5 _ 6 _ 6 = 16 medium #1257: 3 _ 5 _ 6 _ 6 = 14 medium #1258: 3 _ 5 _ 6 _ 9 = 10 medium #1261: 3 _ 5 _ 7 _ 7 = 14 medium #1262: 3 _ 5 _ 8 _ 4 = -7 medium #1266: 3 _ 5 _ 8 _ 2 = 11 medium #1270: 3 _ 5 _ 9 _ 6 = 10 medium #1280: 3 _ 6 _ 2 _ 4 = 13 medium #1281: 3 _ 6 _ 2 _ 5 = 14 medium #1282: 3 _ 6 _ 2 _ 6 = 15 medium #1295: 3 _ 6 _ 2 _ 7 = -6 medium #1296: 3 _ 6 _ 2 _ 8 = 9 medium #1297: 3 _ 6 _ 2 _ 9 = 10 medium #1300: 3 _ 6 _ 3 _ 5 = 13 medium #1309: 3 _ 6 _ 3 _ 8 = 12 medium #1326: 3 _ 6 _ 4 _ 7 = 14 medium #1327: 3 _ 6 _ 4 _ 8 = 10 medium #1328: 3 _ 6 _ 4 _ 8 = -6 medium #1333: 3 _ 6 _ 5 _ 3 = 13 medium #1336: 3 _ 6 _ 5 _ 9 = 10 medium #1339: 3 _ 6 _ 6 _ 9 = 7 medium #1343: 3 _ 6 _ 6 _ 2 = 15 medium #1344: 3 _ 6 _ 6 _ 3 = 16 medium #1351: 3 _ 6 _ 7 _ 4 = 14 medium #1363: 3 _ 6 _ 8 _ 3 = 12 medium #1364: 3 _ 6 _ 8 _ 4 = 8 medium #1365: 3 _ 6 _ 8 _ 5 = 9 medium #1368: 3 _ 6 _ 8 _ 6 = 10 medium #1370: 3 _ 6 _ 8 _ 7 = 11 medium #1372: 3 _ 6 _ 8 _ 8 = 12 medium #1374: 3 _ 6 _ 8 _ 9 = -5 medium #1375: 3 _ 6 _ 9 _ 6 = 7 medium #1382: 3 _ 6 _ 9 _ 4 = 6 medium #1383: 3 _ 6 _ 9 _ 4 = -2 medium #1385: 3 _ 6 _ 9 _ 5 = 7 medium #1386: 3 _ 6 _ 9 _ 5 = -3 medium #1387: 3 _ 6 _ 9 _ 5 = 10 medium #1388: 3 _ 6 _ 9 _ 6 = 8 medium #1389: 3 _ 6 _ 9 _ 6 = -4 medium