Morning Challenge

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Across
  1. 2. one seventh of 42
  2. 4. one quarter of eight
  3. 5. one third of 39
  4. 8. one fifth of 45
  5. 10. three groups of six
  6. 11. one eighth of 56
  7. 12. three quarters of 20
  8. 13. the total number of digits
  9. 14. one quarter of 80
  10. 15. number of sides on an octagon
  11. 16. 30 minus 19
  12. 17. 16 minus 15
Down
  1. 1. difference between 64 and 80
  2. 3. 32 divided by 8
  3. 5. one seventh of 84
  4. 6. 55 minus 36
  5. 7. one twelfth of 60
  6. 9. take 83 from 100
  7. 12. one half of 28
  8. 13. 27 divided by 9