Simple Equations – Class 7

Chapter 4 of NCERT/CBSE Class 7 Mathematics is about Simple Equations. Here in this lesson you can find out practice problems for this chapter.

MODEL QUESTIONS FOR CLASS 7 MATHEMATICS
Simple Equations – Chapter 4
Choose the correct answer from the options given below:

  1. If 5p = 25, then value of p is ————
    A. 1
    B. 5
    C. 10
  2. The value of x for which the expressions (x-5) and (2x + 5) becomes equal is ——
    A. 10
    B. -10
    C. 5
  3. If 4x = 10x -6, then the value of x is ———–
    A. 1
    B. 2
    C. 4
  4. The equation for the following statement: Six times y plus 3 gets you 45 is ——
    A. 6y + 3 = 45
    B. 6(y + 3) = 45
    c. 6 + y + 3 = 45
  5. The solution of the equation 3n + 7 = 25 is —————-
    A. 5
    B. 6
    C. 7
    Answer the following:
  6. Solve
    a) 2(m + 2) = 20
    b) 3p – 6 = 21
  7. The sum of three times of a number and 7 is 37. Find the number?
  8. Set up equation and solve
    a) Manu takes a number such that half of the number is 5 more than 21.
    b) Amina thinks of a number. If she takes away 2 from three times of the number, the result is 25.
  9. Convert the following statements into equations:
    a) Three times the sum of 8 and the number y is 42.
    b) 7 subtracted from twice a number y is 21.
  10. Solve the following equations:
    a) 3y + 5 = 44
    b) 3(m + 3) = 18

ANSWERS:

  1. 5
  2. -10
  3. 1
  4. 6y + 3 = 45
  5. 6
  6. a) 2(m + 2) = 20
    m + 2 = 20/2
    m + 2 = 10
    m = 10 – 2 =8.
    b) 3p – 6 = 21
    3p = 21 + 6 = 27
    p = 27/3 = 9
  7. Let the number be x.
    Given 3x + 7 = 37
    3x = 37 – 7
    3x = 30
    x = 30/3 = 10.
    8.a) Let the number be x.
    Given ½ x = 5 + 21
    ½ x = 26
    x = 26 x 2 = 52.
    b) Let the number be x.
    3x – 2 = 25
    3x = 25 + 2 = 27
    x = 27/3 = 9
    9.a) 3( 8 + y) = 42
    b) 2y – 7 = 21
    10.a) 3y + 5 = 44
    3y = 44 – 5
    3y = 39
    y = 39/3 = 13.
    b) 3(m + 3) = 18
    m + 3 = 18/3
    m +3 = 6
    m = 6 – 3 = 3.

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