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You are here: Home / Maths / What are Roman Numerals | Rules and Examples | Maths Grade 4

Arinjay Academy / August 24, 2018

What are Roman Numerals | Rules and Examples | Maths Grade 4

Rule 1 – Repetition of a Roman Numeral means addition.

  • Only letters I, X, C, M can be repeated.
  • No letter can be repeated more than 3 times.
  • Letter V, L, D are never repeated.

Rule 2 – When a smaller numeral is placed on the left of the larger numeral, it means Subtraction.

  • I can be subtracted from V and X only.
  • X can be subtracted from L and C only.
  • C can be subtracted from D and M only.

Conversion of Hindu Arabic Numerals to Roman Numerals.

Question 1

Express 4 in Roman Numeral.

Explanation

Step I : Express the number in expanded form.
4 = 5 – 1

Step II : Convert Expanded form of number in Roman Numeral.
5 – 1 = (V) – (I) = IV

Hence, 4 would be represented as IV

Question 2

Express 12 in Roman Numeral.

Explanation 

Step I : Express the number in Expanded form.
12 = 10 + 1 + 1

Step II : Convert Expanded form of number in Roman Numeral.
10 + 1 + 1 = (X) + (I) + (I)= XII

Hence, 12 would be represented as XII

Question 3

Express 48 in Roman Numeral.

Explanation

Step I : Express the number in Expanded form.
48   =      40    +    5      +   3
= (50 – 10) +   5      +   3

Step II : Convert Expanded form of number in Roman Numeral.
(50 – 10) + 5 + 3 = (L – X) + (V) + (III)= XLVIII

Hence, 48 would be represented as XLVIII

Question 4

Express 95 in Roman Numeral.

Explanation

Step I : Express the number in Expanded form.
95 =        90       +     5
=  (100 – 10)  +    5

Step II : Convert Expanded form of number in Roman Numeral.
(100 – 10) + 5 = (C – X) + V = XCV

Hence, 95 would be represented as XCV

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Conversion of Roman Numerals to Hindu Arabic Numerals.

Question 1

Express VI in Hindu Arabic Numeral.

Explanation

Roman numerals

VI = V + I
= 5 + 1
= 6

Hence, VI can be represented as 6 in Hindu Arabic Numeral.

Question 2

Express XVII in Hindu Arabic Numeral.

Explanation

XVII = X + V + I + I
= 10 + 5 + 1 + 1
= 17

Hence, XVII can be represented as 17 in Hindu Arabic Numeral.

Question 3

Express XIV in Hindu Arabic Numeral.

Explanation

XIV = X + IV
= 10 + 4
= 14

Hence, Roman Numeral XIV can be represented as 14 in Hindu Arabic Numeral.

Question 4

Express XXVIII in Hindu Arabic Numeral.

Explanation

Hindu Arabic Numerals

XXVIII = X + X + V + I + I + I
= 10 + 10 + 5 + 1 + 1 + 1
= 28

Hence, XXVIII can be represented as 28 in Hindu Arabic Numeral.

Learn More…

  • Successor and Predecessor
  • What are Consecutive Numbers
  • Place Value
  • Expanded Form
  • Standard form
  • Rounding off numbers to the nearest 10, 100 and 1000

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Filed Under: Maths, Maths Class 4 Tagged With: convert numbers to roman numerals, convert roman numerals to numbers, counting in roman numerals, hindu Arabic numeral, how to convert hindu-arabic numerals to roman numerals, how to convert roman numerals to hindu arabic numerals, maths roman numbers, maths roman numerals, numbers to roman numerals, roman counting, roman digit, roman number system, roman numbers, Roman Numeral, roman numerals, roman numerals definition, roman numerals examples, roman numerals exercises, roman numerals rules, Roman Numerals to Hindu Arabic Numerals., What are Roman Numerals, what are the roman numerals, what is roman numeral, write in roman numerals

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