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
Get the algebraic expressions using variables, constants and arithmetic operations. One- fourth of the sum of numbers m and n
  • A
    None of these
  • B
    \(\frac{{m + n}}{4}\)
    Correct
  • C
    m – n
  • D
    m + n
2
Find the value \({{\text{a}}^{\text{2}}}\) + 2ab + \({{\text{b}}^{\text{2}}}\) for a = 3, b = 2.
  • A
    30
  • B
    25
    Correct
  • C
    None of these
  • D
    20
3
Subtract \({\text{5}}{a^{\text{2}}}-{\text{ 7}}ab + {\text{ 5}}{b^{\text{2}}}\)from\({\text{3}}ab-{\text{ 2}}{a^{\text{2}}}-{\text{ 2}}{b^{\text{2}}}\).
  • A
    None of these
  • B
    \({\text{1}}0ab--{\text{ 9}}{a^{\text{2}}}-{\text{ 7}}{b^{\text{2}}}\)
  • C
    \({\text{12}}ab--{\text{ 7}}{a^{\text{2}}}-{\text{ 8}}{b^{\text{2}}}\)
  • D
    \({\text{1}}0ab--{\text{ 7}}{a^{\text{2}}}-{\text{ 7}}{b^{\text{2}}}\)
    Correct
4
If a natural number is denoted by n, its successor is _________.
  • A
    n
  • B
    (n + 1)
    Correct
  • C
    (n - 1)
  • D
    None of these
5
A term is a product of _________.
  • A
    factors
    Correct
  • B
    None of these
  • C
    term
  • D
    expressions
6
From the sum of 13x – 8y +11 and – y – 11, subtract 3x – 3y – 11.
  • A
    10x – 6y + 15
  • B
    10x – 9y + 11
  • C
    10x – 6y + 11
    Correct
  • D
    14x – 6y + 11
7
Find the value of \({\left( {{\text{a}} + {\text{b}}} \right)^{\text{2}}}\)for a = 3, b = 2.
  • A
    5
  • B
    25
    Correct
  • C
    30
  • D
    None of these
8
Find the value of 13 (7a – 4b) for a = 3, b = 2.
  • A
    144
  • B
    121
  • C
    169
    Correct
  • D
    None of these
9
What should be the value of a if the value of \({\text{2}}{x^{\text{2}}} + x-a\) equals to 5, when x = 0?
  • A
    None of these
  • B
    -5
    Correct
  • C
    10
  • D
    5
10
When a = 0, b = – 1, find the value of the expressions: \({\text{2}}{a^{\text{2}}}b + {\text{ 2}}a{b^{\text{2}}} + ab\).
  • A
    3
  • B
    0
    Correct
  • C
    2
  • D
    1
11
Subtract a – b from 3a – b + 4.
  • A
    3a + 4
  • B
    2a + 5
  • C
    2a + 4
    Correct
  • D
    3a + 5
12
Get the algebraic expressions using variables, constants and arithmetic operations. The number x multiplied by itself
  • A
    None of these
  • B
    2x
  • C
    x + 2
  • D
    \({{\text{x}}^{\text{2}}}\)
    Correct
13
Simplify the expression: 12 \({{\text{m}}^{\text{2}}}\) – 9m + 5m – 4 \({{\text{m}}^{\text{2}}}\) – 7m + 10.
  • A
    9 \({{\text{m}}^{\text{2}}}\) – 11m + 10
  • B
    8 \({{\text{m}}^{\text{2}}}\) – 15m + 10
  • C
    8 \({{\text{m}}^{\text{2}}}\) – 11m + 10
    Correct
  • D
    8 \({{\text{m}}^{\text{2}}}\) – 11m + 15
14
Terms which have the same algebraic factors are __________.
  • A
    like terms
    Correct
  • B
    unlike terms
  • C
    factors
  • D
    None of these
15
The general (nth) term of a number pattern (or a sequence) is an ________ in n.
  • A
    None of these
  • B
    expression
    Correct
  • C
    terms
  • D
    factors