Mathematics

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Across
  1. 3. 18 divided by the ? of 2 is 9.
  2. 4. 12?2=10
  3. 7. 3/2=1.5
  4. 8. 4 X 123=?
  5. 10. Five ? seven equals 35.
  6. 13. 132x123=16236
  7. 15. 12-2=?
Down
  1. 1. 4?3=7
  2. 2. 3+100=103
  3. 5. 132-132=0
  4. 6. 100?34=66
  5. 9. 4 / 2=?
  6. 11. 2?5=10
  7. 12. 5+4=?
  8. 14. 129 ? 3 is 43