Arithmetic Operator Puzzles

#1345: 3 _ 6 _ 6 _ 6 = 17 hard #1346: 3 _ 6 _ 7 _ 3 = 17 hard #1347: 3 _ 6 _ 7 _ 7 = 19 hard #1348: 3 _ 6 _ 7 _ 7 = 17 hard #1349: 3 _ 6 _ 7 _ 9 = 14 hard #1350: 3 _ 6 _ 7 _ 2 = 7 easy #1351: 3 _ 6 _ 7 _ 4 = 14 medium #1352: 3 _ 6 _ 8 _ 3 = 19 hard #1353: 3 _ 6 _ 8 _ 4 = 15 hard #1354: 3 _ 6 _ 8 _ 4 = -9 hard #1355: 3 _ 6 _ 8 _ 4 = 20 hard #1356: 3 _ 6 _ 8 _ 8 = 19 hard #1357: 3 _ 6 _ 8 _ 2 = 14 hard #1358: 3 _ 6 _ 8 _ 8 = 17 hard #1359: 3 _ 6 _ 8 _ 9 = 16 hard #1360: 3 _ 6 _ 8 _ 1 = 3 easy #1361: 3 _ 6 _ 8 _ 2 = 6 easy #1362: 3 _ 6 _ 8 _ 3 = 1 easy #1363: 3 _ 6 _ 8 _ 3 = 12 medium #1364: 3 _ 6 _ 8 _ 4 = 8 medium #1365: 3 _ 6 _ 8 _ 5 = 9 medium #1366: 3 _ 6 _ 8 _ 5 = -1 easy #1367: 3 _ 6 _ 8 _ 5 = 20 hard #1368: 3 _ 6 _ 8 _ 6 = 10 medium #1369: 3 _ 6 _ 8 _ 6 = -2 easy #1370: 3 _ 6 _ 8 _ 7 = 11 medium #1371: 3 _ 6 _ 8 _ 7 = -3 easy #1372: 3 _ 6 _ 8 _ 8 = 12 medium #1373: 3 _ 6 _ 8 _ 9 = 13 hard #1374: 3 _ 6 _ 8 _ 9 = -5 medium #1375: 3 _ 6 _ 9 _ 6 = 7 medium #1376: 3 _ 6 _ 9 _ 3 = 1 easy #1377: 3 _ 6 _ 9 _ 9 = 19 hard #1378: 3 _ 6 _ 9 _ 9 = 17 hard #1379: 3 _ 6 _ 9 _ 1 = 3 easy #1380: 3 _ 6 _ 9 _ 2 = 1 easy #1381: 3 _ 6 _ 9 _ 3 = -1 easy #1382: 3 _ 6 _ 9 _ 4 = 6 medium #1383: 3 _ 6 _ 9 _ 4 = -2 medium #1384: 3 _ 6 _ 9 _ 4 = 8 easy #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 #1390: 3 _ 6 _ 9 _ 7 = 9 medium #1391: 3 _ 6 _ 9 _ 7 = 14 hard #1392: 3 _ 6 _ 9 _ 8 = -6 medium