Maths crossword

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Across
  1. 1. 5+6-1
  2. 3. 42 divided by 7
  3. 7. 112-99
  4. 8. 296-288
  5. 9. 990 - 920
  6. 12. Square root of 121
  7. 14. 999 divided by 333
  8. 15. Square root of 16
Down
  1. 1. 5x4
  2. 2. 4x4
  3. 4. 250 divided by 5
  4. 5. 10-3
  5. 6. 210 - 120
  6. 10. 3x4
  7. 11. 2.5 x 2
  8. 13. 27 divided by 3
  9. 14. 64 divided by 32