Class 7 Simple Equations CBSE Questions & Answers

Class 7 · Simple Equations

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

Questions & Answers

1
What is y in 10y – 20 = 50?
  • A
    9
  • B
    5
  • C
    7
    Correct
  • D
    2
2
What is x in\(\frac{x}{3} = \frac{5}{4}\)?
  • A
    \(\frac{{12}}{5}\)
  • B
    12
  • C
    None of these
  • D
    \(\frac{{15}}{4}\)
    Correct
3
In Equation 3x + 4 = 25, the _______ is 25.
  • A
    Equal
  • B
    LHS
  • C
    RHS
    Correct
  • D
    None of these
4
If we divide both sides of the equation by the same number, the balance is _______.
  • A
    None of these
  • B
    disturbed
  • C
    equal
  • D
    undisturbed
    Correct
5
Solve: 3s + 12 = 0
  • A
    s = 4
  • B
    s = -4
    Correct
  • C
    s = 5
  • D
    None of these
6
Solve: 3s = 0
  • A
    None of these
  • B
    s = 3
  • C
    s = 0
    Correct
  • D
    s = -3
7
Solve: – 4(2 – x) = 9
  • A
    None of these
  • B
    \(x = \frac{{17}}{4}\)
    Correct
  • C
    x = 17
  • D
    x = 4
8
Solve: 4(2 – x) = 9
  • A
    x = 4
  • B
    x = -1
  • C
    None of these
  • D
    \(x = \frac{{ - 1}}{4}\)
    Correct
9
Maya, Madhura and Mohsina are friends studying in the same class. In a class test in geography, Maya got 16 out of 25. Madhura got 20. Their average score was 19. How much did Mohsina score?
  • A
    27
  • B
    23
  • C
    25
    Correct
  • D
    20
10
Write the equation for ‘The sum of two times y and 10 is 42 ‘.
  • A
    2y + 10 = 42
    Correct
  • B
    y + 11 = 3
  • C
    2y = 42
  • D
    y + 10 = 42
11
In an isosceles triangle, the vertex angle is twice either base angle. (Let the base angle be b in degrees. Remember that the sum of angles of a triangle is 180 degrees). Set up an equation.
  • A
    4x = 180
  • B
    3x = 180
  • C
    x + 2x = 180
  • D
    x + 2x + 2x = 180
    Correct
12
What is n in\(\frac{n}{5} = \frac{7}{{15}}\)?
  • A
    \(\frac{3}{7}\)
  • B
    \(\frac{{75}}{7}\)
  • C
    \(\frac{7}{3}\)
    Correct
  • D
    21
13
In Equation 6x + 7 = 19, the L.H.S. is ________.
  • A
    6x + 7
    Correct
  • B
    19
  • C
    =
  • D
    None of these
14
If we fail to do the same mathematical operation on both sides of a balanced equation, the balance is ________.
  • A
    None of these
  • B
    disturbed
    Correct
  • C
    undisturbed
  • D
    equal
15
Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?
  • A
    Sachin: 132 runs, Rahul: 66 runs
    Correct
  • B
    None of these
  • C
    Sachin: 132 runs, Rahul: 132 runs
  • D
    Sachin: 66 runs, Rahul: 132 runs