VI
5 + 1 = 6
VI breaks down as V + I (V = 5, I = 1), which add up to 6.
VI breaks down as V + I (V = 5, I = 1), which add up to 6.
The number 6 is written VI 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.