Page 28 - Math Genius C4

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\\September 30, 2025 9:37 AM Bharat Arora P-9 Reader _________________________ Date: ___________________74

Practice time 1F

1. Write the following in roman numerals.
(a) 8 (b) 18 (c) 25 (d) 29 (e) 95

(f) 100 (g) 149 (h) 259 (i) 364 (j) 369
2. Write the following in Hindu-Arabic numerals.
(a) XXIX (b) XLII (c) XLIX (d) XCVIII (e) LXXXIV

(f) CLVII (g) CCLI (h) CCCV (i) CCCXXXV (j) CCCLVIII
3. Write your answer in Hindu-Arabic numerals.

(a) X + IX (b) XXI – XVIII (c) XXXIII – XIV (d) XXVII + IX
4. Write your answer in roman numerals:
(a) 11 + 11 (b) 50 – 1 (c) 100 + 50 (d) 100 + 100

Mental Maths Critical Thinking
1. What is the value of 70 tens?

2. Which is the biggest number: 85420, 872500 or 82059?
3. What is the Hindu–Arabic numeral for CXXIV?

maths fun Critical Thinking
Across a

(b) The Hindu-Arabic numeral for CLII b

(d) The numeral for 'five lakh thirty-four
thousand five hundred seventy' c
(e) The successor of 210049

(h) The smallest number among d
27,960; 8,36,404; 5,00,748

(i) The predecessor of 682120
down e f

(a) 10000 more than 75364

(c) The greatest 5-digit g
number using digits
1, 7, 0, 9 h

(f) 1784 rounded off to
the nearest 10
i
(g) The standard form of
50000 + 9000 + 200 + 80 + 4

26 Mathematics-4