HT+H, HT-H, HT+T, HT-T, HT+E, HT-E

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Across
  1. 4. 590 - 9 =
  2. 5. 100 + 630 =
  3. 7. 340 + 70 =
  4. 10. 510 - 30 =
  5. 11. 450 - 80 =
  6. 13. 440 + 30 =
  7. 14. 820 + 50 =
  8. 17. 740 - 30 =
Down
  1. 1. 450 + 9 =
  2. 2. 820 - 3 =
  3. 3. 760 - 80 =
  4. 6. 30 + 290 =
  5. 8. 340 - 200 =
  6. 9. 840 - 0 =
  7. 12. 460 + 300 =
  8. 13. 60 + 350 =
  9. 15. 560 + 200 =
  10. 16. 2 + 370 =