HTE+H, HTE-H, HTE+T, HTE-T, HTE+E, HTE-E

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Across
  1. 1. 952 - 70 =
  2. 3. 321 + 400 =
  3. 4. 8 + 448 =
  4. 5. 364 - 20 =
  5. 7. 100 + 375 =
  6. 9. 745 + 80 =
  7. 10. 80 + 573 =
  8. 12. 774 - 300 =
  9. 13. 567 + 8 =
  10. 15. 90 + 613 =
  11. 16. 616 - 4 =
Down
  1. 2. 892 - 600 =
  2. 3. 576 + 200 =
  3. 4. 515 + 9 =
  4. 6. 835 - 400 =
  5. 8. 543 + 40 =
  6. 10. 654 - 9 =
  7. 11. 982 - 5 =
  8. 12. 30 + 463 =
  9. 14. 300 + 241 =