How to Say "Rounding" in Spanish

redondeo

/redonˈdeo/masculine

The English phrase 'rounding' translates to Spanish as redondeo.

redondeo is a masculine noun used to describe the mathematical act of rounding a value.

Meaning: the act of rounding a mathematical value (noun)

How does it change in a sentence?

The noun redondeo is derived from the verb redondear, which means 'to round'.

/redonˈdeo/

In some Spanish-speaking countries, redondeo is used in a commercial context to describe a practice where customers donate the small change from a purchase to a charity.
In a casual setting, if someone says está redondo, they might not be talking about a circle, but rather saying that a deal or a plan is perfect and flawless.
While redondeo is the mathematical term, the verb redondear is also used in art and sculpture to describe the process of smoothing out sharp edges to make a figure look more natural.

El redondeo es una operación matemática que aproxima un número a cierta cantidad de cifras decimales.
Rounding is a mathematical operation that approximates a number to a certain number of decimal places.
Vamos a redondear el precio a números enteros.
Let's round the price to whole numbers.
Redondearemos los resultados al número entero más cercano.
We will round the results to the nearest whole number.
¿Podrías redondear el valor a dos decimales?
Could you round the value to two decimal places?
El redondeo de los decimales es necesario.
The rounding of the decimals is necessary.
El redondeo es necesario en este cálculo.
Rounding is necessary in this calculation.
¿Cuál es la regla de redondeo aquí?
What is the rounding rule here?
El redondeo de los decimales fue incorrecto.
The rounding of the decimals was incorrect.

Two students are checking their math homework together.

Lucía

Mateo, ¿revisaste el redondeo de esta operación?
Mateo, did you check the rounding of this operation?
Mateo

Sí, Lucía, parece que todo está bien.
Yes, Lucía, it seems everything is fine.
Lucía

No estoy segura de este redondeo.
I am not sure about this rounding.
Mateo

Tienes razón, vamos a corregirlo ahora.
You are right, let's correct it now.

Sources

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