Arithmetic Operator Puzzles

#3649: 8 _ 2 _ 9 _ 9 = 15 hard #3650: 8 _ 2 _ 9 _ 2 = 18 hard #3651: 8 _ 2 _ 9 _ 6 = 6 easy #3652: 8 _ 3 _ 2 _ 4 = 14 hard #3653: 8 _ 3 _ 2 _ 4 = 2 easy #3654: 8 _ 3 _ 2 _ 8 = -4 medium #3655: 8 _ 3 _ 2 _ 4 = 12 medium #3656: 8 _ 3 _ 2 _ 1 = 11 medium #3657: 8 _ 3 _ 2 _ 2 = 14 hard #3658: 8 _ 3 _ 2 _ 3 = 15 hard #3659: 8 _ 3 _ 2 _ 3 = 9 medium #3660: 8 _ 3 _ 2 _ 4 = 8 medium #3661: 8 _ 3 _ 2 _ 6 = 18 hard #3662: 8 _ 3 _ 2 _ 6 = 6 easy #3663: 8 _ 3 _ 2 _ 6 = 2 easy #3664: 8 _ 3 _ 2 _ 7 = 5 easy #3665: 8 _ 3 _ 2 _ 8 = 4 easy #3666: 8 _ 3 _ 2 _ 9 = 3 easy #3667: 8 _ 3 _ 3 _ 9 = 9 medium #3668: 8 _ 3 _ 3 _ 9 = 7 medium #3669: 8 _ 3 _ 3 _ 6 = 12 medium #3670: 8 _ 3 _ 4 _ 2 = 14 hard #3671: 8 _ 3 _ 4 _ 6 = 10 medium #3672: 8 _ 3 _ 4 _ 2 = 2 easy #3673: 8 _ 3 _ 4 _ 6 = 6 easy #3674: 8 _ 3 _ 4 _ 8 = 2 easy #3675: 8 _ 3 _ 4 _ 6 = 16 hard #3676: 8 _ 3 _ 4 _ 1 = 5 easy #3677: 8 _ 3 _ 4 _ 2 = 8 medium #3678: 8 _ 3 _ 4 _ 2 = 4 easy #3679: 8 _ 3 _ 4 _ 2 = 12 medium #3680: 8 _ 3 _ 4 _ 3 = 9 medium #3681: 8 _ 3 _ 4 _ 3 = 3 easy #3682: 8 _ 3 _ 4 _ 4 = 2 easy #3683: 8 _ 3 _ 4 _ 5 = 11 medium #3684: 8 _ 3 _ 4 _ 6 = 12 medium #3685: 8 _ 3 _ 4 _ 7 = -1 easy #3686: 8 _ 3 _ 4 _ 8 = -2 easy #3687: 8 _ 3 _ 4 _ 9 = 15 hard #3688: 8 _ 3 _ 4 _ 9 = -3 medium #3689: 8 _ 3 _ 4 _ 6 = 4 easy #3690: 8 _ 3 _ 5 _ 6 = 20 hard #3691: 8 _ 3 _ 6 _ 9 = 10 medium #3692: 8 _ 3 _ 6 _ 4 = 10 medium #3693: 8 _ 3 _ 6 _ 9 = 6 medium #3694: 8 _ 3 _ 6 _ 4 = 6 easy #3695: 8 _ 3 _ 6 _ 8 = 4 easy #3696: 8 _ 3 _ 6 _ 9 = 16 hard