Page 110 - New Medley 3 Semester 1

Rule 1: Repetition of numeral means addition. Only I and X can be
repeated maximum up to three times. V can never be repeated.

For example, II = 1 + 1 = 2, III = 1 + 1 + 1 = 3, XX = 10 + 10

= 20 and XXX = 10 + 10 + 10 = 30

Rule 2: A numeral of smaller value written to the right of a numeral with

bigger value means addition.

For example, VI = 5 + 1 = 6, XII = 10 + 2 = 12, XV = 10 + 5
= 15

Rule 3: A numeral of smaller value written to the left of a numeral with

larger value means subtraction. V can never be subtracted.

For example, IV = 5 – 1 = 4, IX = 10 – 1 = 9

Rule 4: For expressing numerals greater than 10, the numbers are split

into tens and ones.

For example, 11 = 10 + 1 = X + I = XI, 17 = 10 + 7 = X + VII
= XVII

24 = 20 + 4 = XX + IV = XXIV

EXERCISE 1.10

A. Write the Roman numerals for each of the following.

1. 4 2. 8 3. 12 4. 16

5. 21 6. 27 7. 33 8. 39

9. 35 10. 19 11. 24 12. 36

B. Write the Hindu-Arabic numerals for each of the following.

1. VII 2. XIV 3. XX

4. XXIX 5. XXXII 6. XVIII

7. XXVI 8. XXXIV 9. IX

10. XXV 11. XV 12. XXX

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