Test Paper Of Class 7 Maths Chapter 12 Algebraic Expression

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**Chapter 12 Test Paper (02)**

## Class 7 Maths Chapter 12 algebraic Expression Test Paper Set-2 Text Form:-

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**SAMPLE PAPER (02)**

** 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 coefficient of xy in 3x^{2} zy + 7xyz ā 2z^{2}x is

(a) 3z (b) ā 2 (c) 7yz (d) 7z

2. Which of the following is a pair of like terms?

(a) ā7xy^{2}z, ā 7x^{2}yz (b) ā 10xyz^{2}, 3xyz^{2}

(c) 3xyz, 3x^{2}y^{2}z^{2} (d) 4xyz^{2}, 4x^{2}yz

3. The sum of x^{4} ā xy + 2y^{2} and āx^{4} + xy + 2y^{2} is

(a) Monomial and polynomial in y (b) Binomial and Polynomial

(c) Trinomial and polynomial (d) Monomial and polynomial in x

4. The side length of the top of square table is x. The expression for perimeter is:

(a) 4 + x (b) 2x (c) 4x (d) 8x

5. 123x^{2}y ā 138x^{2}y is a like term of :

(a) 10xy (b) ā15xy (c) ā15xy^{2} (d) 10x^{2}y

**Section ā B**

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

(i) x + 2xy + 3y (ii) 100m + 1000n

(iii) 0.1 y + 0.01 y^{2} (iv) 5 ā 3t^{2}

7. Classify into monomials, binomials and trinomials.

(i) ab ā a ā b (ii) 5 ā 3t

(iii) 4p^{2}q ā 4pq^{2} (iv) 7mn

8. Identify like terms in the following:

(a) ā xy^{2} , ā 4yx^{2} , 8x^{2} , 2xy^{2} , 7y, ā 11x^{2}, ā 100x, ā 11yx,

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

(i) Numbers x and y both squared and added.

(ii) Number 5 added to three times the product of numbers m and n.

**Section ā C**

10. Simplify combining like terms:

(i) 3a ā 2b ā ab ā (a ā b + ab) + 3ab + b ā a

(ii) 5x^{2}y ā 5x^{2} + 3yx^{2} ā 3y^{2} + x^{2} ā y^{2} + 8xy^{2} ā 3y^{2}

(iii) (3y^{2} + 5y ā 4) ā (8y ā y^{2} ā 4)

11. Subtract:

(i) a (b ā 5) from b (5 ā a)

(ii) ām^{2} + 5mn from 4m^{2} ā 3mn + 8

(iii) ā x^{2} + 10x ā 5 from 5x ā 10

12. Find the value of the following expressions, when x = ā1:

(i) 2x ā 7 (ii) ā x + 2 (iii) x 2 + 2x + 1

**Section ā D**

13. (a) From the sum of 3x ā y + 11 and ā y ā 11, subtract 3x ā y ā 11.

(b) From the sum of 4 + 3x and 5 ā 4x + 2x^{2} , subtract the sum of 3x^{2} ā 5x and āx^{2} + 2x + 5

14. Find the values of the following polynomials at a = ā 2 and b = 3

(a) (a^{2} + b) /3 ^{2}

(b) (a^{2} – B^{2}) /3

(c) a/b + b/a

(d) a^{2} + b^{2} ā ab ā b^{2} ā a^{2}