# Class 8 Maths Chapter 9 Test Paper Set 3 Pdf Download CBSE

Test Paper Of Class 8 Maths Chapter 9 Algebraic Expressions and Identities set 3 pdf download

Chapter 9 Test Paper (03)

Class 8 Maths Chapter 9 Algebraic Expressions and Identities Test Paper Set-3 Text Form:-

PGRMS Education

SAMPLE PAPER (3)
CLASS: 8                                                MAX. MARKS :30
SUBJECT: MATHEMATICS                  TIME: 1:30 HOUR
CH: 9 (Algebraic Expressions and Identities)

Section – A

In Questions 1 to 10, there are four options, out of which one is correct. Write the correct answer.

1. a ( b + c) = ab + ac is

(a)commutative property   (b) distributive property

(c) associative property     (d) closure property

2. The sum of –7pq and 2pq is

(a) –9pq                             (b) 9pq

(c) 5pq                               (d) – 5pq

3. Sum of a – b + ab, b + c – bc and c – a – ac is

(a) 2c + ab – ac – bc         (b) 2c – ab – ac – bc

#### Test Paper Of Class 8th

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• (c) 2c + ab + ac + bc         (d) 2c – ab + ac + bc

4. Product of 6a2 – 7b + 5ab and 2ab is

(a) 12a3b – 14ab2 + 10ab  (b) 12a3b – 14ab2 + 10a2b2

(c) 6a2 – 7b + 7ab             (d) 12a2b – 7ab2 + 10ab

5. Square of 9x – 7xy is

(a) 81x2 + 49x2y2               (b) 81x2 – 49x2y2

(c) 81x2 + 49x2y2 –126x2y (d) 81x2 + 49x2y2 – 63x2y

Section – B

6. Identify the terms, their coefficients for each of the following expressions.

(i) 4x2y2 – 4x2y2z2+ z2

(ii) 3 – pq + qr – rp

7. (a) Add (iii) 2p2q2– 3pq + 4, 5 + 7pq – 3p2q2

(c) Subtract 4p2q – 3pq + 5pq2 – 8p + 7q – 10 from 18 – 3p – 11q + 5pq2 pq2+ 5p2q

8. Obtain the volume of rectangular boxes with the following length, breadth and height respectively.

(iii) xy, 2x2y, 2xy2

(iv) x × x2× x3× x4

9. (a) Simplify 3x (4x – 5) + 3 and find its values for

(i) x = 4

(ii) x =10.

Section – C

10. Find the product.

(a) (2.5l – 0.5m) and (2.5l + 0.5m)

(b) (p2 – q2) (2p + q)

(c) (a + 3b) and (x + 5)

11. Simplify.

(a) (a + b + c)(a + b – c)

(b) (a + b) (2a – 3b + c) – (2a – 3b)

(c) (m + n) (m2 – mn + n2) = m3 + n3

12. Use a suitable identity to get each of the following products.

(a) (a2+ b2) (– a2 + b2)

(b) (2a2 + 9) (2a2 + 5)

(c) (6x – 7) (6x + 7)

Section – D

13. Simplify.

(a) (4pq + 3q)2 – (4pq – 3q)2 = 48pq2

(b) (2.5p – 1.5q)2– (1.5p – 2.5q)2

(c) 103 × 104

(d) 992

14 (a) If a2 + b2 = 74 and ab = 35, then find a + b.

(b) The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.

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