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User: Description: [Music] smile and learn Hello friends today we&#39;re going back in time to ancient Rome to learn about Roman numerals are you coming with let&#39;s go Roman numerals are the numbering system that they used in the Roman Empire more than 2,000 years ago but the origin of this system is even older it comes from the civilization of the atrans a group of people who lived in Tuscan Italy about 2,900 years ago incredible right the atrans created a numbering system using symbols and later the Romans were inspired by them to create a similar system the Romans represented numbers by drawing them like sticks this means they drew as many sticks as units they had to count for example the number one is represented by one stick people think that using sticks to represent numbers started because the Romans used to count with their fingers just like when we were little now that we know the origin of Roman numerals let&#39;s look at the letters that make up the Roman numeral system [Music] the numbering system is made up of seven capital letters and each letter has a numerical value let&#39;s see the value the Romans gave to each of the letters the letter I has a value of one the letter V has a value of five the letter X has a value of 10 the letter L has a value of [Music] 50 the letter c has a value of 100 the letter d has a value of 500 and finally the letter m has a value of [Music] 1,000 what do you think is the numbering system that we use today the same as the Roman numbering system no of course not in the ancient Roman Empire the numbering system was bive this means that each letter has a value and does not have place value that is values are represented by the sum of the symbols in the number but then the system changed a little to also include subtraction and multiplication let&#39;s look at some examples to understand it better in the Roman numbering system two letter X&#39;s represent the number 20 since the letter X has a value of 10 so if we add two letter X&#39;s it is like adding 10 + 10 this is how we get number 20 let&#39;s see an example of how we use subtraction in Roman numerals the letters i and V represented the number four since the I is to the left of the V we subtract it value from that of the V the value of V is 5 and the value of I is 1 so we subtract 5 - 1 to get the number four today the numbering system we use is of Arabic origin this is a place value system which means that the value of each digit depends on the place it has in the number and today we still use Roman numerals for some things let&#39;s have a look at [Music] what we use Roman numerals in the names of kings and queens like Queen Elizabeth [Music] II we can also see Roman numerals in the names of sporting events like the Olympic Games or the Super Bowl people also use them to number the volumes or parts of some books we can even see them on some clocks have you ever seen a clock with Roman numerals lots of old clocks have them that&#39;s all for today Friends next time I&#39;ll show you how to read and write Roman numerals don&#39;t miss it see you soon 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 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 equal 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 equals 600 now let&#39;s look at the different rules for writing Roman numerals [Applause] correctly let&#39;s start with rule 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 equals 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 they 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 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 i1 from the letter V 5 and x 10 when it is to the left of these numerals when we we subtract from V it looks like this IV this means 5 - 1 or [Music] 4 when we subtract the letter i 1 from the letter x 10 it looks like this iix to calculate its value we subtract 10 - 1 this means IX represents the number nine 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 90 [Music] 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 repe 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 * 1,000 which equal 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 [Music]
Language: en
Title: 📝 ROMAN NUMERALS for Kids 🏛 Compilation
Caption: Educational video for kids that talks about what Roman numerals are and how they are used. The Roman numerals are the numbering system used in the Roman Empire more than 2000 years ago. The origin of this system comes from the civilization of the Etruscans, a group of people who lived in Tuscany, Italy, approximately 2,900 years ago. The numbering system is composed of seven capital letters and each letter has a numerical value. Roman numerals are written and read from left to right and from highest to lowest value. If to the right of a letter we have a letter of equal or lesser value, we add the values of the numbers together. When a letter with a lesser value is written to the left of a letter with a greater value, we subtract the lesser number from the greater one. 

This video is a very useful and interesting resource for children. It is perfect for teaching or reviewing Roman numerals. It is an excellent video for primary education.

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