Page 28 - ICSE Math 5

Progress Worksheet

Mental Maths

1. Fill in the blanks.
(a) The Roman numeral system does not have a symbol to represent _________.

(b) The number 1,000 is written in the Roman system as _________.
(c) Roman number I can be subtracted only from _________ and _________ .

(d) Roman number _________ can be subtracted only from L and C.

2. Select the correct answer.

(a) In Roman numerals, 61 is written as:
(i) VI (ii) IL (iii) LXI (iv) XXXXXI

(b) What is the value of CX in Hindu-Arabic system?

(i) 110 (ii) 101 (iii) 91 (iv) 111
(c) What is the value of C?

(i) 10,000 (ii) 1,000 (iii) 1,00,000 (iv) 100

(d) How is 429 written in Roman numerals?
(i) CCCCXXIX (ii) CDXXVIV (iii) CDXXIX (iv) DCXXIX

(e) What is the value of M?

(i) 10,000 (ii) 1,000 (iii) 1,00,000 (iv) 10,00,000

Solve and Answer

3. Write the following numerals in the Roman numeral system.

(a) 243 (b) 85 (c) 305 (d) 891 (e) 226 (f) 350

4. Write the following numerals in the Hindu-Arabic numeral system.
(a) XLVI (b) CCXCI (c) DLXII (d) XXXIV (e) DCCCII (f) MCC

5. Which of the following are not written as per the rules?
(a) VVI (b) XLL (c) XL (d) ICC (e) CM (f) XDC (g) CDL

6. Find the value of the following using the Roman numerals.
(a) XCIV – XC (b) CLXV + CII (c) DIV + CCC (d) DCCCXCIX – DC

7. Solve the following and write the answer using the Roman numerals.

(a) 7 × 30 (b) 62 × 4 (c) 56 + 30 (d) 500 × 4

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