Arithmetic Operator Puzzles

#2113: 4 _ 9 _ 3 _ 8 = 4 easy #2114: 4 _ 9 _ 3 _ 9 = 3 easy #2115: 4 _ 9 _ 3 _ 6 = 8 easy #2116: 4 _ 9 _ 4 _ 3 = 16 hard #2117: 4 _ 9 _ 4 _ 6 = 10 medium #2118: 4 _ 9 _ 4 _ 3 = -8 hard #2119: 4 _ 9 _ 4 _ 6 = -2 medium #2120: 4 _ 9 _ 4 _ 8 = 18 hard #2121: 4 _ 9 _ 4 _ 2 = 18 hard #2122: 4 _ 9 _ 4 _ 3 = 3 easy #2123: 4 _ 9 _ 5 _ 3 = 19 hard #2124: 4 _ 9 _ 6 _ 8 = 16 hard #2125: 4 _ 9 _ 6 _ 4 = -2 medium #2126: 4 _ 9 _ 6 _ 8 = -8 hard #2127: 4 _ 9 _ 6 _ 1 = 5 easy #2128: 4 _ 9 _ 6 _ 2 = 8 medium #2129: 4 _ 9 _ 6 _ 2 = 4 easy #2130: 4 _ 9 _ 6 _ 2 = 12 medium #2131: 4 _ 9 _ 6 _ 3 = 9 medium #2132: 4 _ 9 _ 6 _ 3 = 3 easy #2133: 4 _ 9 _ 6 _ 3 = 2 easy #2134: 4 _ 9 _ 6 _ 4 = 2 easy #2135: 4 _ 9 _ 6 _ 5 = 11 hard #2136: 4 _ 9 _ 6 _ 5 = 1 easy #2137: 4 _ 9 _ 6 _ 7 = 13 hard #2138: 4 _ 9 _ 6 _ 7 = -1 easy #2139: 4 _ 9 _ 6 _ 8 = 14 hard #2140: 4 _ 9 _ 6 _ 8 = -2 medium #2141: 4 _ 9 _ 6 _ 9 = 15 hard #2142: 4 _ 9 _ 6 _ 9 = -3 medium #2143: 4 _ 9 _ 6 _ 3 = 8 easy #2144: 4 _ 9 _ 6 _ 6 = 16 hard #2145: 4 _ 9 _ 8 _ 6 = 16 hard #2146: 4 _ 9 _ 8 _ 6 = -8 hard #2147: 4 _ 9 _ 8 _ 4 = 18 hard #2148: 5 _ 1 _ 2 _ 8 = 9 medium #2149: 5 _ 1 _ 2 _ 8 = 1 easy #2150: 5 _ 1 _ 3 _ 9 = 8 medium #2151: 5 _ 1 _ 3 _ 9 = 2 easy #2152: 5 _ 1 _ 4 _ 8 = 7 easy #2153: 5 _ 1 _ 4 _ 8 = 3 easy #2154: 5 _ 2 _ 2 _ 4 = 6 easy #2155: 5 _ 2 _ 2 _ 2 = 9 easy #2156: 5 _ 2 _ 2 _ 8 = 10 easy #2157: 5 _ 2 _ 3 _ 6 = 9 easy #2158: 5 _ 2 _ 3 _ 9 = 11 hard #2159: 5 _ 2 _ 3 _ 9 = -1 easy #2160: 5 _ 2 _ 3 _ 3 = 11 easy