How to Say "the sixties" in Spanish
The Spanish word for “the sixties” is “sesenta” — A1 level. This is a very common word in everyday Spanish.
English → SpanishA1
adjectiveA1
referring to a decade or age range

Examples
Hay sesenta minutos en una hora.
There are sixty minutes in an hour.
Mi tío tiene sesenta años.
My uncle is sixty years old.
Ese libro cuesta sesenta pesos.
That book costs sixty pesos.
Always stays the same
Unlike the number one, 'sesenta' never changes its ending. It stays 'sesenta' whether you are counting masculine items (like 'libros') or feminine items (like 'mesas').
The 'S' vs. 'T' Mix-up
Mistake: “Confusing 'sesenta' with 'setenta'.”
Correction: Use 'sesenta' for 60 (think of 'seis' for 6) and 'setenta' for 70 (think of 'siete' for 7).
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