HE+H, HE-H, HE+T, HE+T, HE-E, HE+E

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Across
  1. 2. 708 + 90 =
  2. 3. 4 + 108 =
  3. 5. 600 + 201 =
  4. 7. 30 + 406 =
  5. 9. 304 - 7 =
  6. 11. 403 - 6 =
  7. 13. 506 + 30 =
  8. 14. 804 + 9 =
  9. 15. 802 - 600 =
  10. 16. 905 + 6 =
Down
  1. 1. 2 + 707 =
  2. 2. 702 - 1 =
  3. 4. 504 - 300 =
  4. 5. 506 + 300 =
  5. 6. 206 - 100 =
  6. 8. 3 + 309 =
  7. 10. 702 + 50 =
  8. 11. 60 + 305 =
  9. 12. 704 + 80 =
  10. 15. 305 - 6 =