You are a JSON assistant. You only reply in valid JSON and never in normal text. Devuelve una calificaci�n para la complejidad de un video basado en los detalles proporcionados. La calificaci�n debe ser una �nica propiedad "result" que contenga un n�mero de punto flotante entre 0 y 1. Aqu� hay una gu�a para la calificaci�n:
0.0 - Perfecto para principiantes totales: Palabras y frases simples, visuales y contexto claros.
0.3 - F�cil: Oraciones simples y palabras comunes adecuadas para principiantes. El video podr�a tener ayudas visuales y contexto para una mejor comprensi�n.
0.5 - Moderado: Oraciones intermedias y un rango m�s amplio de vocabulario. Pueden utilizarse algunos modismos, requiriendo cierto conocimiento previo.
0.6 - Conocido Mejor: El video incluye vocabulario e ideas espec�ficas. Los espectadores deben tener una comprensi�n s�lida del idioma para comprender completamente.
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1 - Experto: El contenido est� dise�ado para hablantes fluidos, con t�rminos e ideas especializados que pueden no ser conocidos por todos los hablantes nativos.
 Idioma: en
Descripcin: smile and learn welcome back to the Roman Empire today we will learn how to read and write Roman numerals I&#39;m sure you remember that the Roman numbering system is made up of seven capital letters and each of the letters has a numerical value since I know that some of you don&#39;t have the best memory we will leave this reference table in the corner during the whole video so don&#39;t forget to learn it it&#39;s very useful the first thing to know is that you read and write Roman numerals from left to right and from the greatest to the least let&#39;s look at an example this number is written from the greatest to the least since V equals 5 and to its right is an i which equals 1 so the letters V and I together equal 6 let&#39;s look at another example the letter D equals 500 and to its right is the letter c which equals 100 it is written from greatest to least so DC equal 600 now let&#39;s look at the different rules for writing Roman numerals [Applause] correctly let&#39;s start with rule one one when to the right of a letter we have a letter of equal or lesser value we add the values together the value of both letters forms a number let&#39;s see how this works with the example from before the letters VI represent the sum of 5 + 1 which equals 6 let&#39;s do another example x x XV would be equal to the sum of 10 + 10 + 10 + 5 which equal 35 easy isn&#39;t it let&#39;s move on to the next rule rule number two you can repeat some letters up to three times in the same numeral we can find some letters repeated up to three times but others cannot be repeated let&#39;s have a closer look let&#39;s start with the letters that can be repeated up to three times in the same numeral there are the letters i 1 x 10 C 100 and M 1,000 for example to write the number 200 we use two C&#39;s since the letter c has a value of 100 if we add both letters together we get 200 but we also have letters that cannot be repeated in the same numeral these letters are V B 5 l 50 and D 500 rule number three when a Roman numeral is placed before another Roman numeral of greater value the result is the difference between the numerals you will see how clear it is with some examples we can subtract the letter i 1 from the letter V 5 and X 10 when it is to the left of these numerals when we subtract from V it looks like this IV this means 5 - 1 or [Music] 4 when we subtract the letter i1 from the letter x 10 it looks like this iix to calculate its value we subtract 10 - 1 this means IX represents the number 9 let&#39;s look at some more letters we can subtract the letter x 10 from the letter L 50 since its value is less this means that if the numeral is XL we subtract 50 - 10 and we get [Music] 40 we can also subtract the letter x 10 from C 100 by joining x c we subtract 100 - 10 and get the number [Music] 90 you should also know that there are other letters that can never be subtracted they are V 5 l 50 and D 500 now on to the last rule we&#39;re going to learn how to write thousands as we know we can only repeat a letter a maximum of three times but then how do we write very large numbers by repeating the letter M 1000 three times we get the number 3,000 but how do we get even higher numbers if we can&#39;t put the letter M any more times very easy to multiply a number by a factor of 1,000 we place a bar over it let&#39;s see an example to understand it better to write the number 4,000 we write the number four with the letters IV and a bar over them this represents 4 * 1000 which equals 4,000 let&#39;s look at another example how do you write the number 500,000 in Roman numerals to form the number 500,000 we first put the letter D which has a value of 500 then we put a bar above it to meantimes 1,000 basically we multiply the value of d by the value of the dash above it that is 500 * 1,000 and we get [Music] 500,000 congratulations you&#39;re now experts at writing Roman numerals see you next [Music] time we&#39;ve learned so much in just one video did you know there are many more videos imagine how much you could learn subscribe to the smile and learn educational channel to learn and have fun at the same time
Ttulo: ROMAN NUMERALS 🏛 Rules on How to Use Roman Numerals 📝 Episode II
Leyenda: Educational video for children that talks about the rules of how to use Roman numerals. The Roman numeral system is composed of seven capital letters that each have a numerical value. The first thing to know is that you read and write Roman numerals from left to right and from the greatest to the least. When to the right of a letter we have a letter of equal or lesser value, we add the values together. The value of both letters forms a number. Another rule is that in the same numeral, we can find some letters repeated up to three times. But, others cannot be repeated. Likewise, When a Roman numeral is placed before another Roman numeral of greater value, the result is the difference between the numerals. Finally, to multiply a number by a factor of 1000 we place a bar over it.

This video is a very useful and interesting resource for children. It is perfect for teaching the rules of use of Roman numerals. It is an excellent video for primary education.

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