Teaching guidelines +/- 15 minutes
This lesson covers Italian cardinal tens like dieci (10), venti (20), and trenta (30), teaching how to form numbers 21 to 99 by combining these with units, including vowel elision before uno and otto.
- Numbers from 21 to 99 are formed with decina + numero.
- Remove the final vowel of the ten with uno and otto.
Decine (10, 20, ...)
| Numero | Esempio |
|---|---|
| 10: Dieci (Ten) | 16: Sedici (Sixteen) |
| 20: Venti (Twenty) | 21: Ventuno (Twenty-one) |
| 30: Trenta (Thirty) | 35: Trentacinque (Thirty-five) |
| 40: Quaranta (Forty) | 48: Quarantotto (Forty-eight) |
| 50: Cinquanta (Fifty) | 59: Cinquantanove (Fifty-nine) |
| 60: Sessanta (Sixty) | 63: Sessantatre (Sixty-three) |
| 70: Settanta (Seventy) | 77: Settantasetta (Seventy-seven) |
| 80: Ottanta (Eighty) | 82: Ottantadue (eighty-two) |
| 90: Novanta (Ninety) | 96: Novantasei (Ninety-six) |
Exceptions!
- "Una dozzina" means 12. Example: "Una dozzina di uova" (A dozen eggs).
Exercise 1: Numeri cardinali: le decine
Instruction: Fill in the correct word.
novanta, quarantasetta, ottanta, sessanta, venti, ottantanove, cinquanta, ventuno
1.
20:
...
(Twenty)
2.
80:
...
(Eighty)
3.
90:
...
(Ninety)
4.
60:
...
(Sixty)
5.
50:
...
(Fifty)
6.
21:
...
(Twenty-one)
7.
89:
...
(Eighty-nine)
8.
47:
...
(Forty-seven)
Exercise 2: Multiple Choice
Instruction: Choose the correct solution
1. Ho comprato ___ arance al mercato.
(I bought ___ oranges at the market.)2. La riunione inizierà ___ minuti dopo le due.
(The meeting will start ___ minutes past two.)3. I biglietti costano ___ euro ciascuno.
(The tickets cost ___ euros each.)4. Abbiamo ordinato ___ pizze per la festa.
(We ordered ___ pizzas for the party.)5. La città ha ___ abitanti.
(The city has ___ inhabitants.)6. Ha guadagnato ___ euro l'anno scorso.
(He earned ___ euros last year.)
