Solution - Roman numeral to integer

2, 872

2,872

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Step-by-step explanation

1. Expand symbols

Read left to right.
If a smaller symbol comes before a larger one, treat them as one subtractive pair (for example, IX = 9).
Otherwise, each symbol stands alone.

For this input we get:

$M (1000) + M (1000) + D (500) + C (100) + C (100) + C (100) + L (50) + X (10) + X (10) + I (1) + I (1)$

2. Sum values

Now add the values:
$1000 + 1000 + 500 + 100 + 100 + 100 + 50 + 10 + 10 + 1 + 1$ = $2, 872$ .

So $M M D ℂ C L X X I I$ equals $2, 872$ .

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Why learn this

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Roman numerals still appear in clocks, chapter headings, outlines, and events. Converting them quickly helps in everyday reading and interpretation.

Terms and topics

Roman numeral to integer