NUMBERS

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Across
  1. 5. eight plus twelve
  2. 6. two plus thirteen
  3. 8. two plus nine
  4. 10. eleven minus nine
  5. 11. five minus one
  6. 12. thirteen minus three
  7. 14. four plus twelve
  8. 18. twelve minus seven
  9. 19. nine minus six
  10. 20. twelve minus five
Down
  1. 1. eleven plus three
  2. 2. eighteen plus one
  3. 3. nineteen minus seven
  4. 4. fourteen plus three
  5. 7. fifteen minus two
  6. 9. twenty minus twelve
  7. 13. three plus six
  8. 15. nineteen minus one
  9. 16. nine minus three
  10. 17. eight minus seven