mark and joes mathmatic crossword

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Across
  1. 3. an easier way of sorting data
  2. 5. an easier way of multiplication
  3. 10. modes best friend
  4. 11. bound decrease 0.5 to a number
  5. 12. more than, less than and equal to
  6. 14. a whole number
  7. 16. bound add 0.5 to a number
  8. 17. an easier way of maths
  9. 19. you collect ...
Down
  1. 1. x
  2. 2. middle number
  3. 3. sorting out things
  4. 4. how many of numbers
  5. 6. the middle between to numbers
  6. 7. difference between a big number and a small number
  7. 8. each of 4 quarters of a circle
  8. 9. a way of simplifying numbers
  9. 13. replacing numbers for letters
  10. 15. Plotting co-ordinates
  11. 18. most common number