Numbers and definitions

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Across
  1. 4. Four tens.
  2. 5. The years in a century.
  3. 10. The minutes in an hour.
  4. 12. ... seven
  5. 13. the maximum mark you can get at school.
  6. 14. A number often considered unlucky in Italy.
  7. 15. The number of hours in a full day.
  8. 17. The number of months in a year.
  9. 19. The number that comes after fourteen.
  10. 21. The number of legs that a snake has.
Down
  1. 1. The legal age of majority (adulthood) in Italy.
  2. 2. The number of Hogwarts houses in Harry Potter.
  3. 3. The duration in minutes of a single half of a football match.
  4. 6. Sixty plus thirty.
  5. 7. One more than ten.
  6. 8. Half of a hundred.
  7. 9. The number of regions in Italy.
  8. 11. A number often considered unlucky in Western cultures.
  9. 12. The age of a sweet ... party or when you can drive in the US.
  10. 14. Biancaneve's dwarfs.
  11. 16. The number of sides in a triangle.
  12. 18. The number of fingers on one human hand.
  13. 20. In Spanish it's dos, in French it's deux, in German it's zwei.