Calculate 10 percent

Calcula el 10% de un número to know the discount applied in a discount or offer of a particular product. Also the reduced VAT applies this percentage on the products although in this case, it is not a rebate since this tax is added on the value of the item in question, something that we tell you in our VAT calculator.

Calculating the percentage of an amount can be very useful, so thanks to our percentage calculator, you will be able to take out 10 percent of the figure you want. Sólo tienes que escribir el número, hacer click sobre el botón de Calcular y automáticamente conocerás cuál es el valor de su 10%. Si quieres calcular cualquier otro porcentaje, no dudes en visitar nuestra percent calculator.

How to calculate 10 percent of an amount

For averiguar el 10 por ciento de un número we only have to apply a simple rule of three:

Formula for calculating 10 percent of a number

In this case, the two unknowns of which we do not yet know the value are the following:

  • B: Número del cual queremos calcular su 10%
  • Nos faltaría saber cuál es el valor de 'Y', número que representará el 10 por ciento del número inicial.

Applying the rule of three we can clear the value we are interested in as follows:

Y = quantity x 10 / 100 = quantity x 0.1

In short, to take 10 percent of something we have to multiply the number by 0.1. To make it clearer, we will now see how the above applies to a practical example.

Calcular el 10 por ciento de 1000

Calculate 10 percent

Para averiguar el 10% del número 1000, vamos a utilizar la fórmula que hemos visto unas líneas más arriba:

Y =  = cantidad x 0,1 = 1000 x 0,1 = 100

As you can see, it is very easy calculate 10 percent of any number with a simple multiplication. Remember that multiplying by 0.1 is the same as dividing by 10, that is, you have to move the decimal point one place to the left. Surely this trick will allow you to calculate the percentage from memory and without the need for calculators.

Calculate the 10 percent increase

So far we have seen how to calculate the 10% of an amount, but what if we want to calculate that percentage increase?

En ese caso lo único que tenemos que hacer es sumar a la cantidad inicial su 10%. Por ejemplo, vamos a calcular el 10 por ciento de aumento de 100:

10% increase = initial quantity x 0.1 + initial quantity = 100 x 0.1 + 100 = 110

Calculate 10 percent less

If what we want is to subtract from a quantity its 10%, in that case the formula we will have to use will be the following:

10% menos = cantidad inicial - cantidad inicial x 0,1

For example, if we want to subtract 10% from 500, it would look like this:

500 - 500 x 0,1 = 500 - 50 = 450

Calculate 10 percent in Excel

If you want to calculate the 10% de una celda utilizando ExcelThe formula to be used is the one below:


Dónde hemos escrito 'celda' tienes que escribir las coordenadas de aquella en la que se encuentre la cifra de la cual quieres calcular el 10 por ciento.

Cómo calcular el 10 por ciento online

Para calcular el 10% de una cantidad online, hemos puesto a tu disposición una calculadora que encontrarás al principio de este texto.

Su funcionamiento es muy sencillo y solamente tienes que introducir la cifra, pulsar el botón de calcular y automáticamente tendrás su 10% calculado. También funciona con cifras decimales por lo que en cuestión de segundos podrás calcular el 10% de cualquier cifra sin tener que hacer ninguna operación y sin equivocarte.

3 thoughts on “Calcular el 10 por ciento”

  1. Hi, I have a problem to solve. I would love it if you could help me.

    In terms of probability, is it equally likely to hit a number out of 10 knowing that I have an 80% probability; and to hit a number out of 100 knowing that I have the same probability (80%).
    Ex: I play a lottery number from 0 to 9 with an 80% probability of winning.
    And I also play 1 number from 00 to 99, with an 80 % probability.
    In which of the two options are you more likely to win?
    It looks the same, but reportedly there is a slight difference.
    Thank you very much

    • Hello,

      As the number of elements in a set increases, the probability of drawing a particular one decreases.

      For example, from 0 to 9, as there are 10 elements, the probabilities of drawing a specific one is 1/10 = 10%

      However, in the example from 00 to 99 there are 100 elements and the probabilities are 1/100 = 1%.

      As you can see, the difference is remarkable in one case and in the other. If in both cases you have a probability of 80%, you will have to calculate it on that 1% and 10% respectively.

      Here you have some more info about it:

      If you still have any doubts, let us know.


  2. A query. To add the VAT to a value you can multiply it by 1.21. To subtract it you divide by 1.21. Can this be done with all percentages?
    For example can 10% be subtracted from 670 by making 670 divided by 1.10?


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