Q 1: Write each of the following Hindu-Arabic numerals in Roman numerals.
1. 12
2. 35
3. 39
4. 170
5. 198
Sol:
1. 12 = XII
2. 35 = XXXV
3. 39 = XXXIX
4. 170 = CLXX
5. 198 = CXCVIII
Q 2: Compare the following pairs of Roman numerals and fill in > or <:
1. LXXXII ______ LXXVII.
2. CLXXIV ______ CLIV
3. CLXXXVII ______ CXLVII
Sol:
1. LXXXII > LXXVII2. CLXXIV > CLIV
3. CLXXXVII > CXLVII
Q 3: At the most how many times a symbol can be repeated in Roman system?
Sol:
- A symbol is not repeated more than three times.
If a smaller symbol is written to the right of a symbol with greater value, then its value gets added to the value of the greater symbol.
Q 4: Express 190 in Roman numerals.
Sol: 190 in Roman Numerals
- 190 = 100 + 90.
- Roman Numerals = C + XC.
- 190 in Roman Numerals = CXC.
Q 5: Which of the following is meaningless?
1. X = 10
2. XX = 20
3. XXX = 30
4. XXXX = 40
Sol: XXXX is meaningless because a symbol is not repeated more than three times.
Q 6: Which symbols in the Roman system are never repeated?
Sol: The symbols V, L and D are never repeated.
Q 7: Write the Hindu-Arabic numeral for each of the following Roman numerals:
1. CDLXXI
2. CDVIII
3. DCXL
Sol:
1. CDLXXI = 471
2. CDVIII = 408
3. DCXL = 640
Q 8: There is no symbol for zero in the Roman system. Is it true?
Sol: Roman numerals started to count from one and had no symbol to represent “0“.
This happens because the Romans did not need to have a zero in their additive system.
Question 9: In Roman system, by which symbol do we represent 100?
Sol: 100 is represented as C.
Question 10: The symbols that cannot be used for showing subtraction are ______.
Sol: The symbols V, L and D are not written to the left of a symbol that has greater value.
This means that V, L and D are never subtracted.
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1. What are Roman numerals and how are they used in everyday life? |
2. How do you convert Roman numerals to Arabic numbers? |
3. What are the basic symbols used in Roman numerals and their values? |
4. What are some rules for writing Roman numerals? |
5. How do you read large Roman numerals? |
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