Simple Equations – Chapter 4/ CBSE Class 7 Maths
Simple Equations – Chapter 4/ CBSE Class 7 Mathematics is about the Model Questions that you can expect for Yearly Examination. Here you can find out practice problems for Class 7 Mathematics.
Simple Equations – Chapter 4/Extra Questions/ CBSE Class 7 Mathematics
Model Questions/Important Questions
Fill in the blanks:
- If 3a = 42, then value of a is ————–
- If 2x – 4 = 6, then value of x is ———-
- The solution of the equation 3y + 3 = 12 is ————-
- ‘Three times a number y subtracted from 12 is 5’ can be written as ———-
- If 5p + 2 = 12, then the value of p is ————-
Answer the following: - Solve 5p – 3 = 27
- Solve 2(m + 4) = 8
- Manu’s father’s age is 4 years more than 3 times Manu’s age. Find Manu’s age if his father is 55 years old.
- The sum of 2 times of a number and 7 is 35. Find the number?
- Solve:
a) 3p = 0
b) 3y + 4 = 25 - Find the value of y for which the expressions y – 15 and 2y + 1 are equal.
- If k + 3 = 8, find the value of 3k – 7?
- 10 times a number is 3 less than 4 times the same number. Find the number?
- Write the algebraic equation and solve; 3 more than 5 times a number is 18.
- Solve
a) 3(p + 4) = 5
b) 2y – 5 = 5
ANSWERS:
- a = 14
- x = 5
- y = 3
- 12 – 3y = 5
- p = 2
- 5p – 3 = 27
5p = 27 + 3 = 30
p = 30/5 = 6 - 2(m + 4) = 8
m + 4 = 8/2 = 4
m = 4 – 4 = 0 - Let Manu’s age be x.
Given 3x + 4 = 55
3x = 55 – 4 = 51
x = 51/3 = 17 - Let the number be y.
Given 2y + 7 = 35
2y = 35 – 7 = 28
y = 28/2 = 14 - a) 3p = 0
p = 0/3 = 0
b) 3y + 4 = 25
3y = 25 – 4 = 21
y = 21/3 =7 - Given y – 15 = 2y + 1
y – 2y = 1 + 15
-y = 16
y = -16 - If k + 3 = 8, k = 8 – 3 = 5
Then 3k – 7 =3 x 5 – 7 = 15 – 7 = 8 - The equation is 10x = 4x – 3
10x – 4x = -3
6x = -3
x = -3/6 = -1/2 - Let the number be z.
The required equation is 3 + 5z = 18 - a) 3( p + 4) = 5
3p + 12 = 5
3p = 5 – 12 = -7
p = -7/3
b) 2y – 5 = 5
2y = 5 + 5 = 10
y = 10/2 = 5
