Class 7 Exam  >  Class 7 Notes  >  Mathematics (Maths) Class 7  >  Worksheet Question & Answers: Simple Equations

Simple Equations Class 7 Worksheet Maths Chapter 4

Q1: If L.H.S. = R.H.S. of an equation, then the equation will be
(a) Balanced
(b) Unbalanced
(c) Constant
(d) Wrong

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: a
Sol: If L.H.S. = R.H.S. of an equation, then the equation is said to be balanced because the value of the left hand side is equal to the value of the right hand side of an equation.

Q2:  In an equation, there is always a/an
(a) equality sign (=)
(b) greater than sign (>)
(c) less than sign (<)
(d) division sign ( ∏)

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: a
Sol: An equality sign shows the relationship in which the values on each side of an equation are exactly equal.

Q3: The equation form of the given statement ‘6 less than a number is 13’ will be
(a) x - 6 = 13
(b) 6x = 13
(c) x - 13 = 6
(d) x= 13 - 6

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: a
Sol:  Let x be the unknown number.
6 less than the number x can be represented as x - 6.
So, the equation is:
x - 6 = 13.
So, the correct equation form is (a) x - 6 = 13.

Q4: If the sum of three consecutive even numbers is 78 then the numbers will be
(a) 10, 12 an 14
(b) 16, 18 and 20
(c) 22, 24 and 26
(d) 24, 26 and 28

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans. d
Sol: Let us assume three consecutive even numbers are x, x + 2 and x + 4
Therefore, according to question x + (x + 2) + (x + 4) = 78
3x + 6 = 78
3x = 78 – 6 = 72
x = 24 (Divide both side by 3)
Thus, the numbers are
x = 24, x + 2 = 26 and x + 4 = 28.

Q5: The statement form of the given equation ‘x - 4 = 5’ is
(a) Taking away 5 from x gives 4
(b) Taking away 4 from 5 gives x
(c) Taking away 4 from x gives 5
(d) Taking away 5 from 4 gives x

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans. c
Sol: The equation is essentially saying that if we take away 4 from x, we will get 5.
So, option (c) accurately represents the given equation in statement form.

Q6: Subtract 7 from thrice a number the result is 8. The equation form of the above statement is
(a) 7x - 2 = 8
(b) x - 2 = 7
(c) 3x - 7 = 8
(d) 2x - 8 = 7

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: c
Sol: Let x be a number
Subtract 7 from trice a number = 3x - 7
Now, The equation form of the given statement is 3x - 7 = 8.

Q7: The statement form of the given equation ‘2x + 6 = 24’ is
(a) Twice a number is 24 increased by 6
(b) Twice a number increased by 6 is 24
(c) Twice a number is 24 and increased by 6
(d) Twice a number increased by 24 is 6

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: b
Sol: 2x = Twice a number of x and, 2x + 6 = twice a number increase by 6
And, 2x + 6 = 24 means twice a number increased by 6 is 24.

Q8: For the equation 6p - 4 = 8, the solution will be
(a) p = 1
(b) p = 2
(c) p = 3
(d) p = 4

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: b
Sol: Given 6p - 4 = 8 For p = 2,
L.H.S. = 6 x 2 – 4 = 12 - 4 = 8 = R.H.S.
Thus, L.H.S. = R.H.S.
Therefore, p = 2 is a solution for the given equation 6p - 4 = 8.

Q9: The value of a variable is
(a) 0
(b) 1
(c) fixed
(d) not fixed

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: d
Sol: The value of a variable is not fixed because a variable can take different numerical values.
For example:
If x = 3, we say that the value of x is 3.
In other case, if we want to find the value of x in a given equation x - 4 = 2, then the value of x = 2 + 4 = 6.
Taking another example, if we want to find the value of x in 3x = 6,
then the value of x = 6/3 = 2.
Hence, we say that the variable x can take different values.

Q10: Karan says that he has 6 balls more than five times the number of balls Sumit has. If Karan has 36 balls and Sumit has x number of balls, then the equation form for this statement is
(a) 5x + 6 = 36
(b) 5x + 36 = 6
(c) 5x - 6 = 36
(d) 5x - 36 = 6

Simple Equations Class 7 Worksheet Maths Chapter 4  View Answer

Ans: a
Sol: Karan has 36 balls. Let Sumit has x number of balls, we can represent the statement as:
5x + 6 = 36.
So, the equation form for this statement is (a) 5x + 6 = 36.

The document Simple Equations Class 7 Worksheet Maths Chapter 4 is a part of the Class 7 Course Mathematics (Maths) Class 7.
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FAQs on Simple Equations Class 7 Worksheet Maths Chapter 4

1. How do you solve simple equations with one variable?
Ans. To solve simple equations with one variable, isolate the variable by performing the same operation on both sides of the equation until the variable is alone on one side.
2. What is the importance of balancing equations in mathematics?
Ans. Balancing equations in mathematics is crucial as it ensures that both sides of the equation have an equal value, helping us find the correct solution.
3. Can you provide an example of solving a simple equation step by step?
Ans. Certainly! Let's take the equation 2x + 5 = 11 as an example and solve it step by step.
4. Are there any special rules to follow when solving equations involving fractions?
Ans. When solving equations involving fractions, it is recommended to multiply both sides of the equation by the denominator to eliminate fractions and simplify the solution process.
5. How can one check their solution to a simple equation to ensure its accuracy?
Ans. To check the accuracy of a solution to a simple equation, substitute the found value back into the original equation and verify that both sides are equal.
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