Numbers 1 to 100

Numbers are among the most practical vocabulary in any language. You will need them for prices, addresses, phone numbers, telling time, giving your age, and countless other daily situations. In this lesson, you will learn all Italian numbers from 1 to 100, including the patterns and irregularities that make them work.

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Overview

Italian numbers follow a logical system with some irregularities in the first group (0–16). Once you learn the building blocks, you can construct any number up to 100 — and beyond.

Tip: Memorise numbers 0–20 thoroughly, as they are the foundation. After 20, the system becomes highly predictable.

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Numbers 0–20: The Foundation

These numbers must be memorised individually, as several are irregular.

Number	Italian	Pronunciation
0	zero	"DZEH-roh"
1	uno	"OO-noh"
2	due	"DOO-eh"
3	tre	"treh"
4	quattro	"KWAHT-troh"
5	cinque	"CHEEN-kweh"
6	sei	"say"
7	sette	"SET-teh"
8	otto	"OHT-toh"
9	nove	"NOH-veh"
10	dieci	"DYEH-chee"
11	undici	"OON-dee-chee"
12	dodici	"DOH-dee-chee"
13	tredici	"TREH-dee-chee"
14	quattordici	"kwaht-TOR-dee-chee"
15	quindici	"KWEEN-dee-chee"
16	sedici	"SEH-dee-chee"
17	diciassette	"dee-chahs-SET-teh"
18	diciotto	"dee-CHOHT-toh"
19	diciannove	"dee-chahn-NOH-veh"
20	venti	"VEN-tee"

Patterns in 11–19

Numbers 11–16 end in -dici (from dieci, ten):

• undici (11), dodici (12), tredici (13), quattordici (14), quindici (15), sedici (16)

Numbers 17–19 start with dici- (a rearranged form of dieci):

• diciassette (17), diciotto (18), diciannove (19)

Tip: Notice the switch at 17. Numbers 11–16 put the unit first (un-dici, do-dici), but 17–19 put dici- first (dici-assette, dici-otto, dici-annove). This is an important pattern to memorise.

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The Tens: 20–90

Number	Italian	Pronunciation
20	venti	"VEN-tee"
30	trenta	"TREN-tah"
40	quaranta	"kwah-RAHN-tah"
50	cinquanta	"cheen-KWAHN-tah"
60	sessanta	"ses-SAHN-tah"
70	settanta	"set-TAHN-tah"
80	ottanta	"oht-TAHN-tah"
90	novanta	"noh-VAHN-tah"

Patterns

All tens from 30 to 90 end in -anta:

• trenta, quaranta, cinquanta, sessanta, settanta, ottanta, novanta

The root of each ten relates to the unit digit:

• 30: tre → trenta
• 40: quattro → quaranta
• 50: cinque → cinquanta
• 60: sei → sessanta
• 70: sette → settanta
• 80: otto → ottanta
• 90: nove → novanta

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Numbers 21–29: The Venti Pattern

Numbers 21–29 are formed by combining venti with the unit digit. The important rule: the final vowel of venti is dropped before uno and otto.

Number	Italian	Rule
21	ventuno	Drop the -i of venti before uno
22	ventidue	Regular: venti + due
23	ventitré	Regular: venti + tre (with accent!)
24	ventiquattro	Regular: venti + quattro
25	venticinque	Regular: venti + cinque
26	ventisei	Regular: venti + sei
27	ventisette	Regular: venti + sette
28	ventotto	Drop the -i of venti before otto
29	ventinove	Regular: venti + nove

Key Rules:

1. Before uno and otto, the final vowel of the ten is dropped: ventuno (not ventiuno), ventotto (not ventiotto).
2. Tre takes an accent when combined: ventitré, trentatré, quarantatré, etc.

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Numbers 30–99: The Same Pattern

All numbers from 30 to 99 follow the exact same pattern as 21–29. Simply replace venti with the appropriate ten.

30s

Number	Italian
31	trentuno
32	trentadue
33	trentatré
34	trentaquattro
35	trentacinque
36	trentasei
37	trentasette
38	trentotto
39	trentanove

40s–90s: Selected Examples