Do you want to know how to refer fractions? You are in the best place! This lesson will certainly be a milestone in her learning journey. Going with it, friend will know the differences and also similarities of fractions in between English and also languages, in addition to their number and also gender specifications. Come simplify, this practical overview will sheathe these various sections:

the difference in between fractions and ordinal numbersthe most typical fractionsthe various expressions for themthe suffix -avo and also -imopercentages and decimals making use of fractions

¡Vamos por partes!Let’s go component by part!

Fractions vs Ordinal Numbers

First points first: fractions room equal components of a whole. When it concerns math, it is represented with a number called the numerator, that goes ~ above top, and also a denominator that goes in ~ the bottom. The molecule tells girlfriend how countless parts the the entirety are taken and the denominator shows how plenty of parts the whole was split into. If you ate two parts of a cake that was separated into 7 parts, friend ate 2/7th that the cake.

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On the various other hand, ordinal numbers designate a number to rank or order parts. It have the right to be a competition (1st place, 2nd place), building floors (3rd floor, fourth floor), places (5th house, second door, third traffic light) or processes (first, you to water the milk, second, you to water the flour).

In order come express fractions in, cardinal number (1, 2, 3) and also ordinal number (1st, 2nd, 3rd) work-related together, one appropriate after the other. The cardinal number is offered to define the numerator and the ordinal number is offered to explain the denominator. Keep reading to discover how to build fractions and also what room the most common ones!

Most typical Fractions

Sure, a whole can be split into a million parts, however it would be really unusual to execute it ~ above a cake. While counting to a million in might be useful occasionally, most real-life fractions room small. These small numbers have the right to be useful when complying with a recipe, dividing a tiny area or running a not-so-sophisticated statistic, of children in a classroom because that example. Here’s a table that goes from 2 fractions up to ten, in noun form.

English Fractions
Halfmitad, medio

When to use Medio, Media or Mitad

Both medio (masculine) and media (feminine) room adjectives that explain “fifty percent of” any kind of given noun. Meanwhile, mitad is a feminine noun. All 3 words average “half,” but their consumption is dependent on their function in the sentence.

In the following examples, media and also medio describe the noun. Because they room adjectives, they do not need an article (le, la).

Tengo media sandía.I have fifty percent a watermelon.

Tienes medio melón.You have fifty percent a melon.

La mitad is a feminine noun that stands alone. When you divide a whole, prefer a watermelon or a melon, la mitad deserve to express “the half of” a feminine noun or a masculine noun.

Quiero comer la mitad de la sandía.I want to eat fifty percent of the watermelon.

Ella se comió la mitad del pastel.She ate half of the cake.

La mitad de la gente estaba decepcionada.Half the the world were disappointed.

Metí la mitad de los copos de nieve en una bolsa.I put fifty percent of the snowflakes in the bag.


Adjective (medio) vs Noun (la mitad)

In the adhering to example, medio estadio functions the same way the expression bello estadio does—adjective (medio, bello) + noun (estadio):

Medio estadio estaba gritando.Half the stadium was shouting.

In the adhering to example, la mitad de las personas functions the same way the expression la mayoría de ras personas does—noun (la mitad, la mayoría) + de + noun (las personas):

La mitad de ras personas en el estadio estaban gritando.Half the the world at the stadion were shouting.

Since “half a person” (media persona) no exist, the expression instead divides the team of civilization into la mitad.

How to Express Fractions

In bespeak to refer to fountain you need to recognize a tiny about that is formula in a sentence, the two various expressions, that suffixes, and also how to manage numbers and genders. Through the end of the lesson you will certainly be an experienced on the subject!

Formulating Fractions

Like the introduction says, cardinal and ordinal numbers are essential in order to express fractions. We will use 2 thirds, 2/5, together an example. However first, a rapid refresher on the parts of a fraction:

Dos quintos: 2/5

The number on optimal (2) is the numerator—in, el numerador.

The number on the bottom (5) is the denominator—in, el denominador.

Numerator: Dos (cardinal number)

Denominator: Quintos (ordinal number)

Numerators various other than one do the denominator plural, inquiry an -s in ~ the end, just like in English (two fifths). If you room not sure exactly how to use Numbers in you can go over the lesson before continuing.

When the molecule is one, favor one 5th ⅕, use the indefinite write-up un rather of uno.

Un quintoOne 5th / A fifth

Necesito un quinto de harina.I need a 5th of flour.

Tercio vs Tercera

Tercio and also tercera space both terms that analyze to “third” in English and also refer to fractions of a entirety that have been separated into three equal parts.

However, the word tercio is a mrs noun that is only provided for fractions:

Un tercio de la población prefiere comida dulce.A 3rd of the populace prefers sweet food.

Meanwhile, words tercera is a femenine adjective the has much more than one purpose. You have the right to say:

la tercera vez – the third timela tercera persona – the third partyla tercera en la lista – third on the list

In order come be taken into consideration a fraction, tercera have to be complied with by words parte:

La tercera parte de la población prefiere comida dulce.

The third part of the populace prefers sweet food.

Fractions together Adjectives

Considering the differences in between tercio and also tercera, we can now relocate on come fraction expressions in adjective form. If their role in the sentence different (noun vs. Adjective), their an interpretation is virtually the same. Below are some an ext fractions in adjective form:

English Adjective
Halfmedio, media
Thirdtercera (parte)
Quartercuarta (parte)
Fifthquinta (parte)
Sixthsexta (parte)
Seventhséptima (parte)
Eighthoctava (parte)
Ninthnovena (parte)
Tenthdécima (parte)

Una mitad del pastel es verde y la otra es morada.One half of the cake is green and the other fifty percent is purple.

Mi papá comió la mitad del pie de manzana.My dad ate fifty percent of the to apologize pie.

Me gustaría la tercera parte del pastel.I’d like a 3rd (part) of the cake.

Formula: fraction + De + Noun

When you use fractions, you can be an ext specific in her descriptions by making use of the formula portion + de + noun

The preposition de undergoes transforms depending ~ above the kind of noun (or pronoun) that adheres to it. Take a look:

1. De prior to possessive pronouns:

La mitad de mi casa.Half my house.

Un tercio de tu vida.A third of your life.

2. Del is a convulsion of de and el because that masculine nouns:

Un tercio del patio.One 3rd of the patio.

La quinta parte del mundo.A fifth part of the world.

3. De la applies if the noun is feminine:

La mitad de la taza.Half the cup.

Una sexta parte de la cocina.One 6th of the kitchen.

4. De lo que method “of what”:

Un cuarto de lo que me debes.A 4 minutes 1 of what you owe me.

La mitad de lo que necesito.Half that what ns need.

La octava parte de lo que gastas.The eighth part of what girlfriend spend.

5. De los (masculine) and de las (feminine) describe plural nouns:

La mitad de los niños.Half the boys.

La séptima parte de las tartas.The seventh part of the tarts.


Sometimes friend will should use multiples that space fractions as well. Two parts of one or 2/1 can be construed as double. Six components of 2 is the exact same as 6/2, the exact same as 3/1, the exact same as triple. Below are some instances of the most common multiples in conversation:

English Multiples

The -avo Suffix

So far, did you do it learned about the most common fractions. The list goes from 2 to 10 or native mitad come décimo. Later on we went with a fast lesson of fountain as parts using femenine gender. Yet what wake up after the number? That’s wherein the suffix -avo come in handy! come express fractions from 11 to 99 friend only need to add -avo:

English Fractions

Just prefer before, if you room in require to incorporate the indigenous partes, mental to change the gender from masculine to feminine by convert the -o in ~ the finish of the suffix -avo come -a like this:

La veinteava parte.The twenty part.

When the number of parts wake up to it is in something together high together 99, it’s much easier to just say “one out of ninety-nine,” or “one in ninety-nine” for 1/99:

Uno sobre noventa y nueve.One the end of ninety-nine.

Uno entre noventa y nueve.One in ninety-nine.

The -imo suffix

Do you want to understand what wake up from the number 100 and on? Wow, you space a yes, really thorough researcher! The -imo suffix help us show minimal parts of a whole, which is most typically used come express percentages.

English fractions

A hundredth part can be analyzed to 1% or a thousandth come 0.1% come make some expressions easier. In the following section you will certainly learn exactly how to usage percentages and also decimals in


To to express percentages, merely use the cardinal number and add por ciento. For example:

Este producto es 10% (diez por ciento) azúcar.This product is 10% (ten percent) sugar.

20% (veinte por ciento) de la población prefiere clima frío.20% (twenty every cent) that the population prefer cold weather.


Decimals are written and also pronounced in two different ways. In Mexico, Puerto Rico, and main America the many common way of utilizing this math expression is v a period (or “point”), as with in the US:


Cinco punto ocho.Five allude eight.

In southern America, Spain and also the rest of Europe, the comma is wanted over the period and that looks like this:


Cinco coma ocho.

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Five comma eight.

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