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Multiplying Roman Numerals
Last updated at November 19, 2025 by Teachoo
Roman Numerals
Roman Numerals
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Class 8 (Ganita Prakash & Old NCERT)
Chapter 3 Class 8 - A Story of Numbers (Ganita Prakash)
- Introduction
- The Mechanism of Counting
- Some Early Number Systems
-
Roman Numerals
- Figure it out - Page 60, 61
- Egyptian Number System
- Variations on the Egyptian System and the Notion of Base
- Adding Egyptian Numerals
- Multiplying Egyptian Numerals
- Distributive Law β For Egyptian Numerals
- Abacus that Makes Use of the Decimal System
- Shortcomings of the Egyptian System
- Figure it out - Page 69
- Mesopotamian Number System
- Mayan Number System
- Chinese Number System
- Hindu Number System
- Evolution of Ideas in Number Representation
- Figure it out - Page 80
Transcript
Multiplying Roman Numerals There is a way to multiply Roman numerals without converting them to our Hindu numbers first, but it is extremely tedious. So, we just convert them into Hindu Numbers and solve. Letβs do some examples Find π½ Γ π³ Now, π½=π & π³=ππ Since π Γ ππ=πππ We write 250 in Roman numerals 250 = 100 + 100 + 50 = C + C + L = CCL Find π³ Γ π« Now, π³=ππ & π«=πππ Since ππ Γ πππ=ππ,πππ We write 25,000 in Roman numerals The Romans used a bar over a numeral to multiply it by 1,000 . So, 25 (XXV) with a bar. Thus, 25,000 = (πΏπΏπ½) Μ Find π½ Γ π« Now, π½=π & π«=πππ Since π Γ πππ=π,πππ We write 2,500 in Roman numerals 2,500 = 1,000 + 1,000 + 500 = M + M + D = MMD Find ππ°π° Γ π°πΏ Now, π½π°π°=π & π°πΏ=π Since π Γ π=ππ We write 63 in Roman numerals 63 = 50 + 10 + 3 = L + X + II = LXIII
