Study Notes on Latin Numbers

Latin Numbers

  • The Latin numeral system includes distinct words for the first twenty numbers and then follows a pattern for higher numbers. Each numeral is derived from specific Latin roots.

Basic Latin Numbers

  • 1: unus
  • 2: duo
  • 3: tres
  • 4: quattuor
  • 5: quinque
  • 6: sex
  • 7: septem
  • 8: octo
  • 9: novem
  • 10: decem
  • 11: undecim
  • 12: duodecim
  • 13: tredecim
  • 14: quattuordecim
  • 15: quindecim
  • 16: sedecim
  • 17: septemdecim
  • 18: duodeviginti
  • 19: undeviginti
  • 20: viginti

Tens in Latin

  • 30: triginta
  • 40: quadraginta
  • 50: quinquaginta
  • 60: sexaginta
  • 70: septuaginta
  • 80: octoginta
  • 90: nonaginta
  • 100: centum
  • 1,000: mille
Numerical Data
  • Examples of Latin numerals used in expressions:
    • 0: 0
    • 1,000: 1,000
    • Figures: 2234967

Addition in Latin

  • To express simple addition in Latin, the terms used include:
    • et: meaning "and"
    • plus: meaning "plus"
  • For instance, saying "1 plus 2" in Latin could be structured by using these terms along with the appropriate numeral words, e.g., "unus et duo" or "unus plus duo".