Test Paper Of Class 7 Maths Chapter 12 Algebraic Expression

Chapter 12 Test Paper (03)

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Class 7 Maths Chapter 12 algebraic Expression Test Paper Set-3 Text Form:-

PGRMS EDUCATION

SAMPLE PAPER (03)

CLASS: 7                                                         MAX. MARKS :30 SUBJECT: MATHEMATICS                             TIME: 1:30 HOUR CH: 12 (Algebraic Expressions)

General Instructions:

I. All questions are compulsory.

II. This question paper contains 14 questions divided into four Sections A, B, C and D.

III. Section A has 5 questions of 1 mark each. Section B has 4 questions of 2 marks each. Section C has 3 questions of 3 marks each. and Section D has 2 questions of 4 marks each.

IV. Use of Calculators is not permitted.

Section ā A

In Questions 1 to 5, there are four options, out of which one is correct. Write the correct answer.

1. The factors of the term āxy2 are

(a) x Ć y Ć y                                    (b) ā 1 Ć y Ć y

(c) ā 1 Ć x Ć y                                 (d) ā 1 Ć x Ć y Ć y

2. The terms of expression 4x2 ā 3xy are:

(a) 4x2 and ā3xy                            (b) 4x2 and 3xy

(c) 4x2 and āxy                              (d) x2 and xy

3. Identify the binomial out of the following:

(a) 3xy2 + 5y ā x2y                         (b) x2y ā 5y ā x2y

(c) xy + yz + zx                              (d) 3xy2 + 5y ā xy2

4. The value of 3x2 ā 5x + 3 when x = 1 is

(a) 1                         (b) 0                        (c) ā1                       (d) 11

5. The length of a side of square is given as 2x + 3. Which expression represents the perimeter of the square?

(a) 2x + 16               (b) 6x + 9                (c) 8x + 3                (d) 8x + 12

Section ā B

6. Identify the numerical coefficients of terms (other than constants) in the following expressions:

(i) 5 ā 3t2 (ii) 1 + t + t2 + t (iii) 3.14 r2 (iv) 2(l + b)

7. Classify into monomials, binomials and trinomials.

(i) x + y ā xy             (ii) 100             (iii) ab ā a ā b             (iv) 5 ā 3t

8. State whether a given pair of terms is of like or unlike terms.

(iii) ā 29x, ā 29y                               (iv) 14xy, 42yx

(v) 4m2p, 4mp2                               (vi) 12xz, 12x2 z2

9. Get the algebraic expressions in the following cases using variables, constants and arithmetic operations

(i) The number z multiplied by itself.

(ii) One-fourth of the product of numbers p and q.

Section ā C

(i) 3mn, ā 5mn, 8mn, ā 4mn

(ii) t ā 8tz, 3tz ā z, z ā t

(iii) ā 7mn + 5, 12mn + 2, 9mn ā 8, ā 2mn ā 3

11. Subtract:

(i) ā x2 + 10x ā 5 from 5x ā 10

(ii) 5a2 ā 7ab + 5b2 from 3ab ā 2a2 ā 2b2

(iii) 4pq ā 5q2 ā 3p2 from 5p2 + 3q2 ā pq

12. When a = 0, b = ā 1, find the value of the given expressions:

(i) 2a + 2b               (ii) 2a2 + b2 + 1               (iii) 2a2b + 2ab2 + ab

Section ā D

13. If A = 3x2 ā 4x + 1, B = 5x2 + 3x ā 8 and C = 4x2 ā 7x + 3, then find:

(i) (A + B) ā C

(ii) B + C ā A

14. Find the values of following polynomials at m = 1, n = ā1 and p = 2:

(a) m + n + p

(b) m2 + n2 + p2

(c) m3 + n3 + p3

(d) mn + np + pm