Dr C M Mehata Kanya Vidya Mandir Kopargaon

Dr C. M. Mehata Kanya Vidya Mandir, Kopargaon Roman Numerals, Class 5 th By Smt. S. S. Chandre

Roman Numerals • The numbers are written in numerals, You can find numbers like this in inscriptions on buildings, faces of some clocks and in book outlines. • Ancient Romans wrote numerals that did not use place value.

What are the symbols used in the Roman Numeration System? • • There are seven symbols used in this system. I V X L C D M

Each symbol has a corresponding value. • • Roman Numerals I V X L C D M • • Value 1 5 10 50 100 500 1000

Principles used in Roman Numeration System: • Let’s consider this example • 1) VII Where V = 5 I =1 I = 1 So, 5+1+1 = 7 In this example the principle of addition is used. It means I and V written right side to the symbol of bigger numbers. Its value is added to the value of the bigger number.

Principles used in Roman Numeration System: • Let’s consider this example • 2) IV Where I = 1 V =5 So, 5 -1 = 4 In this example the principle of Subtraction is used. I is written on the ieft of v or x, then its value is subtracted from the value of V or X. I is not written more than once before V or X.

Solve : Q. Write the numbers using Roman numerals. 1) 9 2) 4 3) 18 4) 17 5) 20