Young Einstein Mathematics Educational Software Contents

Activity Number 318

Heading : Roman Numerals

Description : Convert a number in Roman numerals to Arabic numerals.

Aim/Questions : Help friar BName1 to convert the number in Roman numerals Answer1 to a number using our Arabic numerals.

Educational software theory used:

Roman numerals are written as combinations of the seven letters in the table below. The letters can be written as capital (XVI) or lower-case letters (xvi).

Roman Numerals

I = 1  C = 100

V = 5  D = 500

X = 10  M = 1000

L = 50

If smaller numbers follow larger numbers, the numbers are added. If a smaller number precedes a larger number, the smaller number is subtracted from the larger number. Follow the example below:

VIII = 5 + 3 = 8

IX = 10 - 1 = 9

XL = 50 - 10 = 40

XC = 100 - 10 = 90

MCMLXXXIV = 1000 + (1000 - 100) + 50 + 30 + (5 - 1) = 1984

Educational software Instruction :

1.  From the question work out the answer then type your answer into the ‘Answer Box’ provided.

2.  Press ‘Enter’ when you have finished.

Module 318. These Instructions from 'Young Einstein Mathematics educational software by Maths Practice are Copyright. Copyright Maths Practice P/L 2003 ©