Page 128 - New Medley 5 Semester 1

Example 32: Express the following in the Hindu-Arabic Numerals:

(a) XVII (b) LXXXIV (c) CLIX (d) DCCXL

Solution: (a) XVII = 10 + 5 + 2 = 17

(b) LXXXIV = 50 + 30 + (5 – 1) = 80 + 4 = 84

(c) CLIX = 100 + 50 + (10 – 1) = 150 + 9 = 159

(d) DCCXL = 500 + 200 + (50 – 10) = 700 + 40 = 740

Note: A smaller numeral written between two larger

numerals is subtracted from the numeral present to its
right.

EXERCISE 1.7

A. Write the Hindu-Arabic Numeral for each of the following.

1. VIII 2. XVIII 3. XXIX 4. LXXV

5. XCII 6. CXLIX 7. CCC 8. CDLV

9. DCCCXVI 10. CML

B. Write the Roman Numeral for each of the following.

1. 9 2. 15 3. 36 4. 49
5. 88 6. 255 7. 400 8. 770

9. 888 10. 1000

C. Which of the following are meaningless?
1. IIII 2. VX 3. CM 4. LL

5. MMMD 6. LXXX 7. DCCCC 8. VC

9. IL 10. LIXX

D. Find the value of the following expressions.

1. LX + XL = 2. D – CX =

3. XXX ÷ V = 4. LV × II =

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