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
The value of expression \({\text{5}}{{\text{n}}^{\text{2}}}\) + 5n – 2 for n = –2 is
  • A
    None of these
  • B
    10
  • C
    -12
  • D
    8
    Correct
2
The value of expression\({\text{2}}{{\text{a}}^{\text{2}}} + {\text{ 2}}{{\text{b}}^{\text{2}}}\)– ab for a = 2, b = 1 is
  • A
    4
  • B
    12
  • C
    8
    Correct
  • D
    10
3
The value of x + 7 + 4 (x – 5) for x = 2 is
  • A
    5
  • B
    -3
    Correct
  • C
    3
  • D
    6
4
The value of expression 2a – 2b – 4 – 5 + a at a = 1, b = -2 is
  • A
    -3
  • B
    -2
    Correct
  • C
    None of these
  • D
    2
5
What must be subtracted from 2a + b to get 2a – b?
  • A
    b
  • B
    a
  • C
    2b
    Correct
  • D
    2a
6
What must be added to 3x + y to get 2x + 3y?
  • A
    x – 2y
  • B
    x + 2y
  • C
    -x + 2y
    Correct
  • D
    3x – 2y
7
Subtract a + 2b from sum of a – b and 2a + b.
  • A
    2a – 2b
    Correct
  • B
    a – b
  • C
    None of these
  • D
    2a + 2b
8
On simplifying (a + b – 3) – (b – a +3) + (a – b + 3) the result is
  • A
    b – 3
  • B
    3a – b
  • C
    3a – b – 3
    Correct
  • D
    None of these
9
What should be value of ‘a’ if \({{\text{y}}^{\text{2}}}\)+ y – a equals to 3 for y = 1?
  • A
    None of these
  • B
    2
  • C
    1
  • D
    -1
    Correct
10
What is an expression for the statement: “p is multiplied by 16”?
  • A
    16 + p
  • B
    16p
    Correct
  • C
    16 – p
  • D
    None of these
11
The expression for the statement: “ y multiplied by 10 and then 7 added to product”.
  • A
    y + 7
  • B
    None of these
  • C
    10y + 7
    Correct
  • D
    10y – 7
12
What is the statement for the expression 2y – 9?
  • A
    9 subtracted from y and multiplied by 2
    Correct
  • B
    9 subtracted from 9
  • C
    thrice of y minus 9
  • D
    2y subtracted from 9
13
Give expression for: “ 5 times of ‘y’ to which 3 is added”,.
  • A
    None of these
  • B
    5y + 3
    Correct
  • C
    5y – 3
  • D
    5y
14
The equation for the statement: one forth of a number minus 4 gives 4.
  • A
    4x = 4
  • B
    \(\frac{1}{4}\)x – 4 = 4
    Correct
  • C
    4x – 4 = 4
  • D
    x – 4 = 4
15
Subtract \( - {\text{ 5}}{{\text{y}}^{\text{2}}}\) from \({{\text{y}}^{\text{2}}}\).
  • A
    \({\text{6}}{{\text{y}}^{\text{2}}}\)
    Correct
  • B
    \( - {\text{6}}{{\text{y}}^{\text{2}}}\)
  • C
    \({\text{5}}{{\text{y}}^{\text{2}}}\)
  • D
    \({\text{4}}{{\text{y}}^{\text{2}}}\)