Arithmetic Operator Puzzles

#1681: 4 _ 3 _ 2 _ 9 = -3 medium #1682: 4 _ 3 _ 2 _ 9 = 6 easy #1683: 4 _ 3 _ 3 _ 9 = 5 easy #1684: 4 _ 3 _ 3 _ 9 = 3 easy #1685: 4 _ 3 _ 3 _ 3 = 11 easy #1686: 4 _ 3 _ 3 _ 6 = 6 easy #1687: 4 _ 3 _ 4 _ 6 = 6 easy #1688: 4 _ 3 _ 4 _ 8 = 10 medium #1689: 4 _ 3 _ 4 _ 2 = -2 easy #1690: 4 _ 3 _ 4 _ 8 = -2 easy #1691: 4 _ 3 _ 4 _ 4 = 13 easy #1692: 4 _ 3 _ 4 _ 4 = 11 easy #1693: 4 _ 3 _ 4 _ 6 = 8 easy #1694: 4 _ 3 _ 4 _ 8 = 6 easy #1695: 4 _ 3 _ 4 _ 3 = 9 easy #1696: 4 _ 3 _ 4 _ 5 = 15 easy #1697: 4 _ 3 _ 4 _ 6 = 18 medium #1698: 4 _ 3 _ 4 _ 9 = 3 easy #1699: 4 _ 3 _ 5 _ 5 = 13 easy #1700: 4 _ 3 _ 5 _ 6 = 10 easy #1701: 4 _ 3 _ 6 _ 9 = 6 medium #1702: 4 _ 3 _ 6 _ 8 = 8 medium #1703: 4 _ 3 _ 6 _ 3 = 14 medium #1704: 4 _ 3 _ 6 _ 6 = 11 easy #1705: 4 _ 3 _ 6 _ 9 = 8 easy #1706: 4 _ 3 _ 6 _ 1 = 3 easy #1707: 4 _ 3 _ 6 _ 2 = 1 easy #1708: 4 _ 3 _ 6 _ 3 = 6 easy #1709: 4 _ 3 _ 6 _ 4 = -2 easy #1710: 4 _ 3 _ 6 _ 4 = 8 easy #1711: 4 _ 3 _ 6 _ 5 = 7 easy #1712: 4 _ 3 _ 6 _ 5 = -3 easy #1713: 4 _ 3 _ 6 _ 5 = 10 easy #1714: 4 _ 3 _ 6 _ 6 = -4 easy #1715: 4 _ 3 _ 6 _ 7 = 9 easy #1716: 4 _ 3 _ 6 _ 7 = -5 easy #1717: 4 _ 3 _ 6 _ 9 = 11 hard #1718: 4 _ 3 _ 6 _ 9 = -7 hard #1719: 4 _ 3 _ 6 _ 9 = 18 hard #1720: 4 _ 3 _ 6 _ 1 = 9 easy #1721: 4 _ 3 _ 6 _ 2 = 6 easy #1722: 4 _ 3 _ 6 _ 3 = 11 easy #1723: 4 _ 3 _ 6 _ 4 = 12 medium #1724: 4 _ 3 _ 6 _ 4 = 4 easy #1725: 4 _ 3 _ 6 _ 5 = 3 easy #1726: 4 _ 3 _ 6 _ 6 = 14 medium #1727: 4 _ 3 _ 6 _ 7 = 1 easy #1728: 4 _ 3 _ 6 _ 8 = 1 easy