DC
500 + 100 = 600
DC breaks down as D + C (D = 500, C = 100), which add up to 600.
DC breaks down as D + C (D = 500, C = 100), which add up to 600.
The number 600 is written DC in Roman numerals. Roman numerals use seven letters — I (1), V (5), X (10), L (50), C (100), D (500) and M (1000) — combined from largest to smallest, with subtractive pairs such as IV (4) and IX (9). Need another number? Use the Roman numeral converter or see the 1–100 chart.