Medium Arithmetic Puzzles

#4233: 9 _ 3 _ 4 _ 6 = 7 medium #4238: 9 _ 3 _ 4 _ 3 = 9 medium #4240: 9 _ 3 _ 4 _ 4 = 8 medium #4242: 9 _ 3 _ 4 _ 6 = 6 medium #4253: 9 _ 3 _ 5 _ 5 = 10 medium #4254: 9 _ 3 _ 5 _ 6 = 9 medium #4255: 9 _ 3 _ 5 _ 8 = 7 medium #4256: 9 _ 3 _ 5 _ 9 = 6 medium #4259: 9 _ 3 _ 6 _ 9 = 7 medium #4260: 9 _ 3 _ 6 _ 4 = 7 medium #4279: 9 _ 3 _ 9 _ 3 = 10 medium #4281: 9 _ 3 _ 9 _ 3 = 8 medium #4282: 9 _ 3 _ 9 _ 6 = 7 medium #4284: 9 _ 3 _ 9 _ 4 = 12 medium #4292: 9 _ 4 _ 2 _ 8 = 8 medium #4296: 9 _ 4 _ 2 _ 7 = -5 medium #4305: 9 _ 4 _ 2 _ 9 = 9 medium #4310: 9 _ 4 _ 3 _ 6 = 7 medium #4312: 9 _ 4 _ 3 _ 9 = -3 medium #4315: 9 _ 4 _ 3 _ 3 = 9 medium #4317: 9 _ 4 _ 3 _ 4 = 8 medium #4319: 9 _ 4 _ 3 _ 6 = 6 medium #4329: 9 _ 4 _ 4 _ 8 = 7 medium #4335: 9 _ 4 _ 6 _ 8 = 6 medium #4339: 9 _ 4 _ 6 _ 2 = 12 medium #4341: 9 _ 4 _ 6 _ 3 = 9 medium #4342: 9 _ 4 _ 6 _ 4 = 10 medium #4349: 9 _ 4 _ 6 _ 8 = -2 medium #4350: 9 _ 4 _ 6 _ 9 = -3 medium #4351: 9 _ 4 _ 7 _ 2 = -5 medium #4352: 9 _ 4 _ 8 _ 2 = 10 medium #4354: 9 _ 4 _ 8 _ 2 = 8 medium #4355: 9 _ 4 _ 8 _ 6 = 6 medium #4365: 9 _ 4 _ 8 _ 8 = 10 medium #4366: 9 _ 4 _ 8 _ 9 = 9 medium #4370: 9 _ 4 _ 9 _ 3 = -3 medium #4373: 9 _ 4 _ 9 _ 3 = 12 medium #4379: 9 _ 5 _ 2 _ 6 = -6 medium #4383: 9 _ 5 _ 3 _ 9 = -6 medium #4390: 9 _ 5 _ 3 _ 5 = 10 medium #4391: 9 _ 5 _ 3 _ 6 = 9 medium #4392: 9 _ 5 _ 3 _ 8 = 7 medium #4393: 9 _ 5 _ 3 _ 9 = 6 medium #4399: 9 _ 5 _ 6 _ 2 = -6 medium #4404: 9 _ 5 _ 9 _ 3 = -6 medium #4405: 9 _ 5 _ 9 _ 2 = 10 medium #4410: 9 _ 6 _ 2 _ 4 = 6 medium #4411: 9 _ 6 _ 2 _ 5 = -6 medium