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Class 5 Maths - Roman Numerals - CBSE Worksheets Solutions

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 > LXXVII

2. 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.

The document Class 5 Maths - Roman Numerals - CBSE Worksheets Solutions is a part of the Class 5 Course Mathematics for Class 5.
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FAQs on Class 5 Maths - Roman Numerals - CBSE Worksheets Solutions

1. What are Roman numerals and how are they used in everyday life?
Ans.Roman numerals are a number system that originated in ancient Rome, using combinations of letters from the Latin alphabet (I, V, X, L, C, D, M) to represent values. They are commonly used today in clock faces, book chapters, movie sequels, and important events like the Olympics.
2. How do you convert Roman numerals to Arabic numbers?
Ans.To convert Roman numerals to Arabic numbers, you add the values of the symbols together. For example, the Roman numeral XII equals 10 (X) + 1 (I) + 1 (I) = 12. However, if a smaller numeral appears before a larger one, you subtract it; for example, IV equals 5 (V) - 1 (I) = 4.
3. What are the basic symbols used in Roman numerals and their values?
Ans.The basic Roman numeral symbols and their values are: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, and M = 1000. These symbols can be combined to create other numbers.
4. What are some rules for writing Roman numerals?
Ans.Some important rules for writing Roman numerals include: 1. Symbols can be repeated up to three times (e.g., III = 3). 2. If a smaller numeral is placed before a larger one, it is subtracted (e.g., IX = 9). 3. If placed after, it is added (e.g., XII = 12). 4. The same symbol cannot be repeated more than three times in a row.
5. How do you read large Roman numerals?
Ans.To read large Roman numerals, break them down into smaller parts. For instance, MCMXCIX can be read as M (1000) + CM (900) + XC (90) + IX (9), which equals 1999. Understanding the value of each symbol and their combinations makes it easier to read larger numerals.
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