10 in Spanish is “Diez”. 10th in Spanish is Décimo
- Ten monkeys - Diez Monos
- It is ten o clock - Son las Diez de la noche.
- In 10th century - En el siglo décimo.
Like in most languages (at least western languages) we first have to learn the ten numbers that actually exist, and the new numbers are created with the use of the first ones. In Spanish we call them in this order: Cero, uno, dos, tres, cuatro, cinco, seis, siete, ocho, nueve y Diez.