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Museum hall

Roman Numerals

Crack the ancient code of I, V, X — the numbers hiding on clocks, castles, and film credits!

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Beginner Zone

Start here — the big ideas, gently.

Roman Numbers: I to XMeet I, V, and X — and learn to count from 1 to 10 the Roman way.Easy⏱ 14 min

Explorer Zone

Build your skills with trickier exhibits.

2Bigger Roman Numbers: L, C, D, MAdd L (50), C (100), D (500), and M (1000) to reach into the thousands.Medium⏱ 16 min

3Reading Roman Numerals EverywhereRead any Roman numeral step by step — and spot them on clocks and in credits.Medium⏱ 14 min