English

A third, twice over, an order of magnitude: fractions and multiples

Spanish counts fractions and multiples its own way, and a word-for-word translation gives nonsense. For example: “Un tercio de la clase faltó, y eso es más de diez alumnos” — A third of the class was absent — and that is more than ten students. A rule from the Spanish course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

Spanish counts fractions and multiples its own way, and a word-for-word translation gives nonsense.

Fractions. Half is la mitad, a third un tercio, a quarter un cuarto. De follows them: la mitad del pan, un tercio de los alumnos. Percentages always take the article: el diez por ciento.

One and a half. There is no single word for it: Spanish splits it in two. Una hora y media, un kilo y medio, dos kilos y medio. The whole comes first, the half after.

Multiples. 'Twice' and 'three times' are el doble and el triple: cuesta el doble. With a comparison add de: el doble de caro. From four upwards you count in veces: cuatro veces más. Before a number it is más de, not más que.

Table

A third, twice over, an order of magnitude: fractions and multiples
in Englishin Spanishthe trap
a third of the classun tercio de la clasethe obligatory de
an hour and a halfuna hora y mediawhole first
twice as expensiveel doble de caroa noun, not an adverb
four times as muchcuatro veces másfrom four up, in times
grew by a thirdsubió en un tercioen, not a
round to tenredondear a dieza, not en
more than twentymás de veintede before the number
more than the neighbourmás que el vecinoque before a person

By example

  • Un tercio de la clase faltó, y eso es más de diez alumnos
    A third of the class was absent — and that is more than ten students
  • Nos costó el doble y tardamos una hora y media más
    It cost us twice as much and took us an hour and a half longer
  • El gasto bajó en un veinte por ciento y se redondeó a mil euros
    The spending fell by twenty percent and was rounded to a thousand euros

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

A third, twice over, an order of magnitude: how does it work in Spanish?

Spanish counts fractions and multiples its own way, and a word-for-word translation gives nonsense.

What does it look like in an example sentence Spanish?

“Un tercio de la clase faltó, y eso es más de diez alumnos” — A third of the class was absent — and that is more than ten students. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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