Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 4 - Number Representation and Calculation - 4.4 Looking Back at Early Numeration Systems - Exercise Set 4.4: 28

Answer

$6211$

Work Step by Step

$M=1000 \\D=500 \\C=100 \\L=50 \\X=10 \\V=5 \\I=1$ Note that: (1) When a smaller number is written before a bigger number, the smaller number is subtracted to the bigger number. (2) A bar on top means the value will be multiplied by $1000$. Thus, $\overline{V}MCCXI \\= (5)(1000) + 1000 + 100+100+10+1 \\=5000+1211 \\=6211$
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