- The numbers from 0 to 9 are called unidades.
- From 0 to 15 are unique numbers and do not follow a specific pattern.
- From 16 to 19, "dieci" is combined with the units. Example: Diecisiete (17)
- The 0 is pronounced "cero".
Números del 1 al 20 (Numbers from 1 to 20)
| 1: Uno (One) | 11: Once (Eleven) |
| 2: Dos (Two) | 12: Doce (Twelve) |
| 3: Tres (Three) | 13: Trece (Thirteen) |
| 4: Cuatro (Four) | 14: Catorce (Fourteen) |
| 5: Cinco (Five) | 15: Quince (Fifteen) |
| 6: Seis (Six) | 16: Dieciséis (Sixteen) |
| 7: Siete (Seven) | 17: Diecisiete (Seventeen) |
| 8: Ocho (Eight) | 18: Dieciocho (Eighteen) |
| 9: Nueve (Nine) | 19: Diecinueve (Nineteen) |
| 10: Diez (Ten) | 20: Veinte (Twenty) |
Exceptions!
- "Un par" means 2. Example: "Un par de zapatos" (a pair of shoes).
- "Una docena" means 12. Example: "Una docena de huevos" (A dozen eggs).
Exercise 1: Números cardinales: básicos
Instruction: Fill in the correct word.
Uno, Once, Cinco, Nueve, Tres, Trece, Diez, Seis
Exercise 2: Multiple Choice
Instruction: Choose the correct solution
1. Yo _____ hasta cien en la clase de español.
(I count to one hundred in Spanish class.)2. Ella _____ cinco y diez para hacer quince.
(She adds five and ten to make fifteen.)3. Nosotros _____ cuatro para encontrar el resultado.
(We subtract four to find the result.)4. Tú _____ siete por ocho en la clase de matemáticas.
(You multiply seven by eight in the maths class.)5. Ellos _____ noventa y nueve alumnos en la escuela.
(They count ninety-nine students in the school.)6. Yo _____ veinticinco y treinta para obtener cincuenta y cinco.
(I add twenty-five and thirty to get fifty-five.)