Language name and location: Italian, Italy, Albanian, Austria [Refer to Ethnologue]
语言名称和分布地区: 意大利语, 意大利, 阿尔巴尼亚, 奥地利, 克罗地亚等国家

1. uno [ˈuno] /una [ˈuna] (masc./fem.)

21.  ventiun(o) [ven̪ˈtun(o)] 

2. due [ˈdue]

22.  ventidue [ven̪tiˈdue]

3. tre [ˈtre]

23.  ventitre [ven̪tiˈtre] 

4. quatro [ˈkwatːro] 

24.  ventiquattro [ven̪tiˈkwatːro] 

5. cinque [ˈt͡ʃiŋkwe]

25.  venticinque [ven̪tiˈt͡ʃiŋkwe]

6. sei [ˈsɛi]

26.  ventisei [ven̪tiˈsɛi] 

7. sette [ˈsɛtːe]

27.  ventisetti [ven̪tiˈsɛtːe]

8. otto [ˈɔtːo]

28.  ventiotto [ven̪ˈtɔtːo]

9. nove [ˈnɔve]

29.  ventinove [ven̪tiˈnɔve]

10. dieci [ˈdjɛt͡ʃi]

30.  trenta [ˈtren̪ta]

11. undici [ˈun̪dit͡ʃi]

40.  quaranta [kwaˈren̪ta]

12. dodici [ˈdodit͡ʃi]

50.  cinquanta [t͡ʃiŋˈkwan̪ta]

13. tredici [ˈtredit͡ʃi]

60.  sessanta [seˈsːan̪ta]

14. quattordici [kwaˈtːordit͡ʃi]

70.  settanta [seˈtːan̪ta]

15. quindici [ˈkwin̪dit͡ʃi]

80.  ottanta [oˈtːan̪ta]

16. sedici [ˈsedit͡ʃi]

90.  novanta [noˈvan̪ta]  

17. diciassette [dit͡ʃaˈsːetːe]

100. cento [ˈt͡ʃen̪to]

18. diciotto [dit͡ʃɔːto]

200. duecento[dueˈt͡ʃen̪to] 

19. diciannove [dit͡ʃaˈnːɔve]

1000. mille [ˈmilːe]

20. venti [ˈven̪ti]

2000. duemila [dueˈmila]  

Linguist providing data and dateː Prof. Pier Marco Bertinetto, Scula Normale Superiore, Pisa, Italy, October 11, 2002
提供资料的语言学家: Prof. Pier Marco Bertinetto, 2002 年 10 月 11 日

Other comments: Italian has a decimal system. Italian is spoken by approximately 68,000,000 speakers in Italy, Albania, Austria, Switzerland, Czechia, Germany, France
United Kingdom, Greece, Croatia, Monaco, Montenegro, Malta, Netherlands, Poland, Portugal, Romania, Serbia, Russian Federation, Slovenia, San Marino and Vatican State.