Page 84 - Math Genius C3

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\ 01-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

Chapter assessment
1. Tick (3) the correct option.

(a) The place value of 8 in 9834 is

(i ) 8 × 100 (ii ) 8 × 1 (iii ) 8 × 10 (iv) 8 × 1000

(b) Anuj wants to convert five `20 notes into a single note. He wants a note of

(i ) `50 (ii ) `100 (iii ) `80 (iv) `200

2. Fill in the blanks.

(a) 9 × 1 = ____ (b) 4 × ____ = 0 (c) 8 × 0 = ____

(d) 0 × 0 = ____ (e) 5 × 1 = ____ (f) 8 × ____ = 8
(g) 9 × 7 = ____ × 9 (h) 4 × 5 = 5 × ____ (i) ____ × 8 = 8 × 7

3. Fill in the blanks.

(a) 1 × 8 = 8 (10 – 2 = 8) (b) 1 × 9 = 9 (0 + 9 = 9)

2 × 8 = 16 (20 – 4 = 16) 2 × 9 = 18 (1 + 8 = 9)
3 × 8 = ___ (30 – 6 = ___) 3 × 9 = ___ (2 + 7 = ___)

4 × 8 = ___ (___ – 8 = ___) 4 × 9 = ___ (___ + ___ = ___)
5 × 8 = ___ (___ – 10 = ___) 5 × 9 = ___ (___ + ___ = ___)

6 × 8 = ___ (60 – 12 = 48) 6 × 9 = ___ (___ + ___ = ___)
7 × 8 = ___ (___ – ___ = ___) 7 × 9 = ___ (___ + ___ = ___)

8 × 8 = ___ (___ – ___ = ___) 8 × 9 = ___ (___ + ___ = ___)
9 × 8 = ___ (___ – ___ = ___) 9 × 9 = ___ (___ + ___ = ___)

10 × 8 = ___ (___ – ___ = ___) 10 × 9 = ___ (___ + ___ = ___)

4. Multiply the following.

(a) 72 × 1 (b) 67 × 23 (c) 73 × 36 (d) 74 × 47 (e) 439 × 18

5. Solve the following word problems.
(a) 17 aeroplanes, each carrying 485 passengers, took off for Bengaluru on Sunday.

How many people went to Bengaluru on that day? COMPETENCy-BASED QuESTiON
(b) The cost of one water bottle is `25. How much will 10 water bottles cost?

(c) There are 382 boxes of toys. Each box contains 12 toys. How many toys are there
in all?

(d) In an examination hall, there are 28 rows of 9 chairs each. How many chairs are
there in all?

82 Mathematics-3