Converting Roman numerals to arabic Numbers

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1) CCXIX

C = 100
X = 10
I = 1

because there are 2 C's I added them together and I got 200
because there are 2 X's I added them together and got 20
because there is 1 I that equaled 1
So I added 200 + 20 + 1 = 221 which is my final answer

But according to the back of the book the answer is 219. Please help me determine how they got 219 for the answer or am I correct. Thank you

  • Converting Roman numerals to arabic Numbers -

    They are correct, IX is 9 XIX is 19

  • Converting Roman numerals to arabic Numbers -

    Ok, what did the Roman Catholic Monk say when the hit the golf ball? IV

  • Converting Roman numerals to arabic Numbers -

    Bobpursley and your book are right.

    I = 1
    II = 2
    III = 3
    IV = 4
    V = 5
    VI = 6
    VII = 7
    VIII = 8
    IX = 9
    X = 10

    Notice that 4 is made by putting I in front of V. 5-1=4

    Notice that 9 is made by putting I in front of X. 10-1=9

    Let us know if you have questions.

  • Converting Roman numerals to arabic Numbers -

    How does IX equal 9? I thought X represented 10 and I represented 1?

  • Converting Roman numerals to arabic Numbers -

    See above.

  • Converting Roman numerals to arabic Numbers -

    Oh ok I got it now thank you so much

  • Converting Roman numerals to arabic Numbers -

    You're welcome.

  • Converting Roman numerals to arabic Numbers -

    Try some of the following links:

    http://search.yahoo.com/search?fr=mcafee&p=converting+Roman+numerals+to+Arabic+numbers

    Sra

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