maths crossword

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Across
  1. 2. ((60/5)×12)/8/9
  2. 5. 8×4×2
  3. 8. 12x12/24×2
  4. 11. 60/15)×12/6/2+2
  5. 12. (((72×5)/30) & 12 - 44) / 5
  6. 14. 84×2/8
  7. 15. 12×12/4
  8. 17. 18/4 x 3-2.5
  9. 18. (7×3+3)/6+7
Down
  1. 1. 7×3×2
  2. 2. 72×5/10-6
  3. 3. (88/11)×12-21+30-5
  4. 4. square root of 64
  5. 6. 12 squared /4
  6. 7. 5×3
  7. 9. (9072/18)/4-43
  8. 10. 3x12+(92/4)-19
  9. 12. 3 cubed
  10. 13. ((3squared x3)-3)/2
  11. 16. square root of 81