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Question
Which of the following correctly represents the sum 45 + 100 = 145 in terms of Roman numerals?
Which of the following correctly represents the sum 45 + 100 = 145 in terms of Roman numerals?
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Solution
The correct option is A XLV + C = CXLV
When a Roman numeral with the larger value is on the left, we add the values together and when it is on the right, we subtract the values.
Thus, 45 = 40 + 5
= (50 - 10) + 5
= XL + V
= XLV.
100 = C
145 = 100 + 40 + 5 = C + XL + V = CXLV.
Thus, the sum 45 + 100 = 145 in terms of Roman numerals is represented by the sum XLV + C = CXLV.
When a Roman numeral with the larger value is on the left, we add the values together and when it is on the right, we subtract the values.
Thus, 45 = 40 + 5
= (50 - 10) + 5
= XL + V
= XLV.
100 = C
145 = 100 + 40 + 5 = C + XL + V = CXLV.
Thus, the sum 45 + 100 = 145 in terms of Roman numerals is represented by the sum XLV + C = CXLV.
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