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E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_04
\ 12-Sep-2024 Surender Prajapati Proof-5 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 from a single note. The note he wants is 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. Observe the following and 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 Kerala on Sunday. How
many people went to Kerala on that day? COMPETENCy-BaSEd QuESTiON

(b) The cost of one waterbottle is `25. How much will 10 such 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