391. 1. The letters used in Roman notation are: I, V, X, L, C, D, M. 2. When a letter of less value is written before a letter of greater value, its value is taken from that of the letter of greater value; as, IV, IX, XL. When it is placed after a letter of greater value, it is added; as, VI, XI, LV, etc. 3. A dash placed over a letter or a combination of letters increases the value a thousand-fold. 4. Write in Roman notation: 27, 34, 68, 89, 235, 309, 540, 894, 1000. 5. Write in Roman notation: 1890, 1776, 1904, 2000. 6. Write in figures: CDXXI MXCIV MDCCCXCIX 7. Where have you seen the Roman numerals used? |