Class 7 Algebraic Expressions CBSE Questions & Answers

Class 7 · Algebraic Expressions

This is Mathematics Class 7 Algebraic Expressions CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
An expression which contains one term is called _______.
  • A
    trinomial
  • B
    None of these
  • C
    binomial
  • D
    monomial
    Correct
2
The _________ of an algebraic expression depends on the values of the variables forming the expression.
  • A
    expression
  • B
    term
  • C
    value
    Correct
  • D
    None of these
3
Find the product: \(\left( {2x - \frac{1}{2}y} \right)\left( {\frac{3}{4}x - 10y + 8} \right)\).
  • A
    \({\text{3}}{{\text{x}}^{\text{2}}}\)
  • B
    None of these
  • C
    \(\frac{3}{2}{x^2} + 5{y^2} - \frac{{163}}{8}xy + 16x - 4y\)
    Correct
  • D
    \({\text{5}}{{\text{y}}^{\text{2}}}\)
4
Simplify these expressions and find their values, if x = 3, a = – 1, b = – 2. 3a + 5 – 8x + 1
  • A
    30
  • B
    20
  • C
    10
  • D
    -20
    Correct
5
Simplify these expressions and find their values, if x = 3, a = – 1, b = – 2. 10x – 3b – 4a – 5 \({{\text{b}}^{\text{2}}}\)
  • A
    30
  • B
    20
    Correct
  • C
    -20
  • D
    10
6
Add: 14x + 10y – 12xy – 13, 18 – 7x – 10y + 8xy, 4xy
  • A
    5
  • B
    7x + 8
  • C
    7x + 5
    Correct
  • D
    7x
7
Add: 5m – 7n, 3n – 4m + 2, 2m – 3mn – 5
  • A
    3m – 4n – 3mn – 3
    Correct
  • B
    3m – 4n – 3mn – 6
  • C
    3m – 4n – 5mn – 3
  • D
    None of these
8
What should be added to \({x^{\text{2}}} + xy + {y^{\text{2}}}\)to obtain\({\text{2}}{x^{\text{2}}} + {\text{ 3}}xy\)?
  • A
    \({x^{\text{2}}} + {\text{ 2}}xy-{y^{\text{2}}}\)
    Correct
  • B
    \({x^{\text{2}}} + {\text{ 2}}xy-{\text{ 3}}{y^{\text{2}}}\)
  • C
    None of these
  • D
    \({\text{5}}{x^{\text{2}}} + {\text{ 2}}xy-{y^{\text{2}}}\)
9
Factors of the terms \(--{\text{4p}}{{\text{q}}^{\text{2}}}\)in the expression \({\text{9}}{{\text{p}}^{\text{2}}}{{\text{q}}^{\text{2}}}-{\text{4p}}{{\text{q}}^{\text{2}}}\) are
  • A
    –4
  • B
    –4, p
  • C
    –4, p, q, q
    Correct
  • D
    –4, q, q
10
If the length of each side of the equilateral triangle is l, then the perimeter of the equilateral triangle is
  • A
    None of these
  • B
    2l
  • C
    3l
    Correct
  • D
    4l
11
Which of the following is monomial?
  • A
    2x
    Correct
  • B
    5y – 51
  • C
    3x – 4y – 5
  • D
    2x + 3
12
Which of the following is trinomial?
  • A
    2a – 3
  • B
    a + b – c – 4
  • C
    2a + 6b – 1
    Correct
  • D
    5a
13
Terms with factors y in the expression 8 + xy + xyz are
  • A
    x
  • B
    xz
  • C
    8
  • D
    xy, xyz
    Correct
14
Identify the terms in the expression x + y + 1 which are not constant
  • A
    2
  • B
    None of these
  • C
    x, y
    Correct
  • D
    1
15
The value of expression 4x – 3 at x = 2 is
  • A
    None of these
  • B
    7
  • C
    6
  • D
    5
    Correct