Arithmetic Operator Puzzles

#2977: 6 _ 6 _ 3 _ 1 = 11 easy #2978: 6 _ 6 _ 3 _ 2 = 14 medium #2979: 6 _ 6 _ 3 _ 3 = 15 medium #2980: 6 _ 6 _ 3 _ 3 = 4 easy #2981: 6 _ 6 _ 3 _ 4 = 16 medium #2982: 6 _ 6 _ 3 _ 4 = 3 easy #2983: 6 _ 6 _ 3 _ 5 = 17 hard #2984: 6 _ 6 _ 3 _ 5 = 7 easy #2985: 6 _ 6 _ 3 _ 6 = 6 easy #2986: 6 _ 6 _ 3 _ 7 = 19 hard #2987: 6 _ 6 _ 3 _ 8 = 20 hard #2988: 6 _ 6 _ 3 _ 8 = 4 easy #2989: 6 _ 6 _ 3 _ 3 = 10 easy #2990: 6 _ 6 _ 3 _ 6 = 19 hard #2991: 6 _ 6 _ 3 _ 3 = -8 medium #2992: 6 _ 6 _ 4 _ 3 = 14 medium #2993: 6 _ 6 _ 4 _ 8 = 9 medium #2994: 6 _ 6 _ 4 _ 3 = -2 easy #2995: 6 _ 6 _ 4 _ 8 = 3 easy #2996: 6 _ 6 _ 4 _ 6 = -3 easy #2997: 6 _ 6 _ 4 _ 8 = -6 medium #2998: 6 _ 6 _ 4 _ 9 = 16 hard #2999: 6 _ 6 _ 4 _ 1 = 10 easy #3000: 6 _ 6 _ 4 _ 2 = 11 easy #3001: 6 _ 6 _ 4 _ 3 = 6 easy #3002: 6 _ 6 _ 4 _ 3 = 3 easy #3003: 6 _ 6 _ 4 _ 4 = 5 easy #3004: 6 _ 6 _ 4 _ 5 = 14 medium #3005: 6 _ 6 _ 4 _ 5 = 4 easy #3006: 6 _ 6 _ 4 _ 7 = 16 hard #3007: 6 _ 6 _ 4 _ 7 = 2 easy #3008: 6 _ 6 _ 4 _ 8 = 17 hard #3009: 6 _ 6 _ 4 _ 8 = 1 easy #3010: 6 _ 6 _ 4 _ 9 = 18 hard #3011: 6 _ 6 _ 4 _ 9 = 1 easy #3012: 6 _ 6 _ 4 _ 4 = 17 hard #3013: 6 _ 6 _ 4 _ 2 = -7 easy #3014: 6 _ 6 _ 4 _ 8 = 2 easy #3015: 6 _ 6 _ 5 _ 3 = -4 easy #3016: 6 _ 6 _ 5 _ 9 = 20 hard #3017: 6 _ 6 _ 5 _ 2 = 11 easy #3018: 6 _ 6 _ 6 _ 4 = 15 medium #3019: 6 _ 6 _ 6 _ 9 = 10 medium #3020: 6 _ 6 _ 6 _ 4 = -3 easy #3021: 6 _ 6 _ 6 _ 9 = 2 easy #3022: 6 _ 6 _ 6 _ 2 = 13 medium #3023: 6 _ 6 _ 6 _ 3 = 19 hard #3024: 6 _ 6 _ 7 _ 3 = 20 hard