Class 8 Maths Chapter 9 Test Paper Set 4 Pdf Download CBSE
Test Paper Of Class 8 Maths Chapter 9 Algebraic Expressions and Identities set 4 pdf download
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Chapter 9 Test Paper (04)
Class 8 Maths Chapter 9 Algebraic Expressions and Identities Test Paper Set-4 Text Form:-
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SAMPLE PAPER (4)
CLASS: 8 MAX. MARKS :30
SUBJECT: MATHEMATICS TIME: 1:30 HOUR
CH: 9 (Algebraic Expressions and Identities)
Section β A
In Questions 1 to 10, there are four options, out of which one is correct. Write the correct answer.
1. The product of a monomial and a binomial is a
(a) monomial (b) binomial
(c) trinomial (d) none of these
2. If we subtract β3x2y2 from x2y2, then we get
(a) β 4x2y2 (b) β 2x2y2
(c) 2x2y2 (d) 4x2y2
3. Product of the following monomials 4p, β 7q3, β7pq is
(a) 196 p2q4 (b) 196 pq4
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(c) β 196 p2q4 (d) 196 p2q3
4. Square of 3x β 4y is
(a) 9x2 β 16y2 (b) 6x2 β 8y2
(c) 9x2 + 16y2 + 24xy (d) 9x2 + 16y2 β 24xy
5. Coefficient of y in the term 3/βy is
(a) β 1 (b) β 3
(c) -1/3 (d)1/3
Section β B
6. Classify the following polynomials as monomials, binomials, trinomials. Which polynomials do not fit in any of these three categories?
x + y, 1000, x + x2 + x3+ x4, 7 + y + 5x, 2y β 3y2, 2y β 3y2 + 4y3, 5x β 4y + 3xy, 4z β 15z2,
7. Add (a) l2+ m2, m2 + n2, n2 + l2, 2lm + 2mn + 2nl
(b) Subtract 5x2β 4y2+ 6y β 3 from 7x2β 4xy + 8y2+ 5x 3y.
8. Obtain the product of
(a) 2, 4y, 8y2, 16y3
(b) pq + qr + rp, 0
9. Simplify a (a2 + a + 1) + 5 and find its value for
(i) a = 0,
(ii) a = 5
Section β C
10. Find the product.
(a) (2pq + 3q2) and (3pq β 2q2)
(b) (a + 7) and (b β 5)
(c) (a2+ 2b2) and (5a β 3b)
11. Simplify
(a) (2.5m + 1.5q)2 + (2.5m β 1.5q)
(b) (x2 β 4) (x2 + 4) + 16
12. Use a suitable identity to get each of the following products.
(a) (7a β 9b) (7a β 9b)
(b) (4x + 5) (4x + 1)
(c) (β a + c) (β a + c)
Section β D
13. Simplify.
(a) (a β b) (a + b) + (b β c) (b + c) + (c β a) (c + a) = 0
(b) (4m + 5n)2+ (5m + 4n)2
(c) 5.1 Γ 5.2
(d) 712
14. (a) The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by him.
(b) Subtract b (b2 + b β 7) + 5 from 3b2 β 8 and find the value of expression obtained for b = β 3.