Four operations

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Across
  1. 5. 3 + 3 ____ 6
  2. 7. 10 + ____ = 20
  3. 9. 2 ____ 5 = 10
  4. 11. ____ x 6 = 30
  5. 12. 12 _____ __ 6 = 2
  6. 14. 16 - ____ = 3
  7. 17. 5 + ____ = 13
  8. 19. ____ + 4 = 18
  9. 20. ____ - 17 = 2
  10. 21. 3 + ____ = 10
  11. 22. ____ + 2 = 3
  12. 23. 5 ____ 2 = 3
Down
  1. 1. 2 x 10 = ____
  2. 2. 5 - ____ = 2
  3. 3. ____ x 2 = 24
  4. 4. 4 ____ 3 = 7
  5. 6. 15 + 2 = ____
  6. 8. ____ + 2 = 13
  7. 10. ____ - 5 = 1
  8. 13. ____ - 2 = 14
  9. 15. 2 x 9 - ____
  10. 16. 8 + ____ = 12
  11. 18. ____ x 8 = 16
  12. 19. 3 x 5 = ____
  13. 20. ____ - 2 = 7