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Convert Between Roman Numerals and Normal Numbers

In this worksheet, students will convert from normal numbers to Roman numerals and vice versa.

'Convert Between Roman Numerals and Normal Numbers' worksheet

Key stage:  KS 2

Year:  Year 5 Maths worksheets

Curriculum topic:   Number: Number and Place Value

Curriculum subtopic:   Read Roman Numerals to M (1000)

Difficulty level:  

Worksheet Overview

The Romans used the following symbols to represent their counting numbers:

 

I = 1
V = 5
X = 10
L = 50
C = 100
D = 500
M = 1000

 

Certain rules apply.

A letter placed after another letter means that you add the second letter to the first letter. Examples include: 

 

VI = 5 + 1 = 6
VII = 5 + 1 + 1 = 7
VIII = 5 + 1 + 1 + 1 = 8
XI = 10 + 1 = 11
LX = 50 + 10 = 60
MC = 1000 + 100 = 1100

 

A letter placed before another letter means that you subtract the first letter from the second. Examples include: 

 

IV = 5 - 1 = 4
IX = 10 - 1 = 9
XL = 50 - 10 = 40
CM = 1000 - 100 = 900

 

 

Example

Write the number 3874 in Roman numerals.

 

Answer

MMM = 3000

DCCC = 500 + 300 = 800

L = 50

XX = 20

IV = 5 - 1 = 4

So 3874 = MMMDCCCLXXIV

 

Phew, that's quite a number! Are you ready to have a go at these now?

 

a Roman centurion

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