Math Problems Within 50 (+and-)

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Across
  1. 3. 34+9=
  2. 5. 6+6+6+6=
  3. 8. 14-6=
  4. 10. 16-8+20=
  5. 11. 44-0=
  6. 12. 67-22=
  7. 14. 49-7-7-7-7-7-7=
  8. 15. 9+27=
Down
  1. 1. 9+8=
  2. 2. 30-15=
  3. 4. 1+1=
  4. 6. 16+8+4+2+1=
  5. 7. 17+17-5=
  6. 9. 19-6=
  7. 13. 2+6+1=