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Solution - Roman numeral to integer

640
640

Other Ways to Solve

Roman numeral to integer

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:

D(500)+C(100)+XL(40)

2. Sum values

Now add the values:
500+100+40 = 640.

So DCXL equals 640.

Why learn this

Learn more with Tiger

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