A story of numbers

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1234567891011121314151617181920
Across
  1. 2. – Simple method of counting using vertical lines.
  2. 7. – One of the oldest writing scripts of ancient India.
  3. 8. – Sanskrit term for “hundred.”
  4. 10. – Number system used by an ancient African civilization with symbols for powers of ten.
  5. 12. – Ancient Indian mathematician and astronomer who introduced advanced calculations.
  6. 13. – Digit that represents nothing, but has immense mathematical importance.
  7. 15. – Name of an ancient manuscript discovered in present-day Pakistan, famous for its use of zero.
  8. 16. – Ancient civilization between the Tigris and Euphrates rivers.
  9. 18. – Sanskrit term for “ten.”
  10. 20. – Important numbers like 10, 100, 1000 used as reference points
Down
  1. 1. – System of numbers based on powers of ten.
  2. 3. – Number system using letters like I, V, X, L, C, D, and M.
  3. 4. – Sanskrit term meaning “thousand.”
  4. 5. – Indian mathematician who gave rules for using zero and negative numbers.
  5. 6. – Number system widely used today, developed in India and spread through Arab mathematicians.
  6. 9. – Script used for Sanskrit and several modern Indian languages.
  7. 11. – Vedic text containing rituals and hymns for sacrifices.
  8. 14. – Number system developed by an ancient Central American civilization, famous for using zero.
  9. 17. – Ancient counting tool with beads, used for calculations.
  10. 19. – Number system that used base 60, developed in an ancient Mesopotamian civilization.