Crossnumber Puzzle

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Across
  1. 3. 642 + 365
  2. 4. 2331 X 2
  3. 5. The number of metres in a kilometre
  4. 6. The number of minutes in a third of an hour
  5. 7. The number of days in August
  6. 8. The difference between 999 and 546
  7. 10. Two hundred more than 325
  8. 13. The sum of 146 and 161
  9. 14. 1234 + 1231
  10. 17. The number of millimetres in one and a half litres
  11. 19. 9 X 8
  12. 20. The number of days in a normal year
  13. 22. 50 X 100
  14. 24. The missing number:45,35,__,15,5
  15. 25. Multiply 841 by ten
  16. 26. Two hundred less than 901
  17. 28. Double 115
  18. 29. 9999 - 2876
  19. 31. 4 X 15
  20. 33. 72 X 100
  21. 34. 8 X 1000
Down
  1. 1. 10 X 67
  2. 2. 10 X 525
  3. 3. Three more than one thousand
  4. 4. Half of ninety
  5. 5. 12 dozen
  6. 6. 456-241
  7. 9. Half of six hundred and eighty
  8. 11. 101 X 50
  9. 12. The product of 4 and 9
  10. 13. Three hundred plus three
  11. 15. The number of metres in 4 kilometres
  12. 16. 255 + 316
  13. 17. The number of cents in $12.54
  14. 18. The number of days in April
  15. 21. 53 X 10
  16. 22. Five multiplied by eleven
  17. 23. Two more than three thousand
  18. 24. The number of millimetres in two and a half metres
  19. 27. The umber of minutes in two hours
  20. 30. The number of seconds in one hour
  21. 32. 4 dozen
  22. 33. Double 354