--- title: "Roman numerals to 1000" description: "Read Roman numerals to 1000 (M) and recognise years written in Roman numerals" canonical: https://lightmysky.com/learn/mathematics/roman-numerals-to-1000-mt_To9HdLy8vq source: https://lightmysky.com/learn/mathematics/roman-numerals-to-1000-mt_To9HdLy8vq.md retrieved: 2026-10-19 --- > **Agent view.** This is the Markdown twin of the page, for tools and assistants. > When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md > API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md > Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt > Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json > Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`. # Roman numerals to 1000 Read Roman numerals to 1000 (M) and recognise years written in Roman numerals Subject: Mathematics · Area: Number Representation & Place Value · Ages 9 to 10 Page: https://lightmysky.com/learn/mathematics/roman-numerals-to-1000-mt_To9HdLy8vq ## Ready when they can - Read MCMXCIX as 1999 - Write 2024 in Roman numerals (MMXXIV) - Explain the subtractive principle: IV = 4 not IIII ## Lesson: Roman numerals up to 1000 You already know I, V, X, L, and C for numbers up to 100. Two new symbols take you all the way to 1000. D stands for 500. M stands for 1000, the biggest number Roman numerals usually need. *(drawing: C sits right before D. That means subtract: 500 minus 100 equals 400.)* **Example.** Look at MCMXCIX. Split it into chunks from left to right: M (1000), CM (900), XC (90), IX (9). Add the chunks: 1000 + 900 + 90 + 9 = 1999. **Example.** The year 2024 splits into MM (2000), XX (20), and IV (4). Put the chunks together: MMXXIV. **Tip.** When a numeral looks long, don't worry. Split it into chunks for thousands, hundreds, tens, and ones, then add each chunk using what you already know. **Recap.** D is 500, M is 1000, and any Roman year breaks into thousands, hundreds, tens, and ones chunks that add together. ## Practice 17 questions on this page, each with its working shown. ## Needs first - [Roman numerals to 100](https://lightmysky.com/learn/mathematics/roman-numerals-to-100-mt_MewIRdzpzz)