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The Roman Numbers

Hi, today I will be talking about the Roman numbers.

Do you know about Roman numbers? Well if you don’t it’s OK, because I didn’t know about Roman numbers until today when I learned about it in my math lesson. The Roman numbers were used by ancient Romans to express numbers and continued to be used in Europe until the Middle Ages.

Today we’re using the Arabic numeral system, but I find the Roman numbers fascinating so let’s dive into it.

They used as a base seven capital letters and then they combined them and made all the possible numbers.

Base Letters I, V, X, L, C, D, M.

These are the base letters I was talking about: I =1; V = 5; X = 10; L= 50; C = 100; D = 500; M = 1000

Repetition Letters I, X, C, M.

Repetition of the letters I, X, C, M, lead to: II = 2; III = 3; IIII = 4; XX = 20; XXX = 30; XXXX = 40; CC = 200; CCC = 300; CCCC = 400; MM = 2000; MMM =3000; MMMM = 4000.

Subtraction of Letters

The numbers 4, 9, 40, and 90 are written as a subtraction: IV = 4; IX = 9; XL = 40; XC = 90.

Addition of Letters

All the other numbers are the result of additions: VI = 6; VII = 7; VIII = 8; XI = 11; XII = 12; XIII = 13; …, CXXVIII = 128.

Now, internet friends, please let me know in the comments below how you write in Arabic numbers: MDLIV.


15 thoughts on “The Roman Numbers

  1. Roman numbers were created by shepherds from tall sticks, as a way to count and keep track of their sheep and cattle.


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