Arithmetic Operator Puzzles

#385: 1 _ 8 _ 3 _ 4 = 6 easy #386: 1 _ 8 _ 3 _ 6 = 4 easy #387: 1 _ 8 _ 3 _ 6 = 16 hard #388: 1 _ 8 _ 4 _ 5 = 11 medium #389: 1 _ 8 _ 4 _ 6 = 13 hard #390: 1 _ 8 _ 4 _ 7 = 15 hard #391: 1 _ 8 _ 4 _ 8 = 17 hard #392: 1 _ 8 _ 4 _ 9 = 19 hard #393: 1 _ 8 _ 4 _ 3 = -5 medium #394: 1 _ 8 _ 4 _ 5 = -9 hard #395: 1 _ 8 _ 4 _ 1 = 1 easy #396: 1 _ 8 _ 4 _ 3 = -1 easy #397: 1 _ 8 _ 4 _ 4 = 6 easy #398: 1 _ 8 _ 4 _ 4 = -2 easy #399: 1 _ 8 _ 4 _ 5 = -3 easy #400: 1 _ 8 _ 4 _ 6 = 8 medium #401: 1 _ 8 _ 4 _ 6 = -4 medium #402: 1 _ 8 _ 4 _ 6 = 12 medium #403: 1 _ 8 _ 4 _ 7 = 9 medium #404: 1 _ 8 _ 4 _ 7 = -5 medium #405: 1 _ 8 _ 4 _ 7 = 14 medium #406: 1 _ 8 _ 4 _ 8 = 10 medium #407: 1 _ 8 _ 4 _ 8 = -6 medium #408: 1 _ 8 _ 4 _ 8 = 16 hard #409: 1 _ 8 _ 4 _ 9 = 11 hard #410: 1 _ 8 _ 4 _ 9 = -7 hard #411: 1 _ 8 _ 4 _ 9 = 18 hard #412: 1 _ 8 _ 4 _ 4 = 2 easy #413: 1 _ 8 _ 5 _ 4 = 11 medium #414: 1 _ 8 _ 5 _ 4 = -9 hard #415: 1 _ 8 _ 5 _ 5 = 7 easy #416: 1 _ 8 _ 5 _ 2 = 20 hard #417: 1 _ 8 _ 6 _ 4 = 13 hard #418: 1 _ 8 _ 6 _ 9 = 13 hard #419: 1 _ 8 _ 6 _ 3 = -3 easy #420: 1 _ 8 _ 6 _ 2 = 11 medium #421: 1 _ 8 _ 6 _ 3 = 10 medium #422: 1 _ 8 _ 6 _ 6 = 7 easy #423: 1 _ 8 _ 6 _ 3 = 16 hard #424: 1 _ 8 _ 6 _ 4 = 12 medium #425: 1 _ 8 _ 6 _ 3 = 4 easy #426: 1 _ 8 _ 7 _ 4 = 15 hard #427: 1 _ 8 _ 7 _ 4 = 14 medium #428: 1 _ 8 _ 8 _ 4 = 17 hard #429: 1 _ 8 _ 8 _ 2 = 12 medium #430: 1 _ 8 _ 8 _ 4 = 10 medium #431: 1 _ 8 _ 8 _ 8 = 7 easy #432: 1 _ 8 _ 8 _ 4 = 16 hard