There are seven symbols used in the Roman numeration system such as I, V, X, L, C, D and M with the corresponding values such as 1, 5, 10, 50, 100, 500 and 1000, respectively.\r
The Roman numeration system uses the principle of addition and subtrion.\r
When the principle of addition is used, a symbol can be used 3 times only.\r
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Download my Math Interive Whiteboard Lessons and flash games here: \r
Lesson Title: Roman Numerals\r
File: Interive Math PowerPoint presentation\r
Grade: 5-6
