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.