Class 7 Mathematics

Chapter 12: Algebraic Expressions

Q1. Which of the following is an algebraic expression?

A. 7 + 5
B. 12 − 3
C. 3x + 5
D. 20 ÷ 4

Correct Answer: C

Explanation:
An algebraic expression contains numbers and variables. 3x + 5 has the variable x.

Q2. In the expression 5x + 7, which is the variable?

A. 5
B. 7
C. x
D. +

Correct Answer: C

Explanation:
A variable is a letter used to represent a number. Here, x is the variable.

Q3. What is the coefficient of x in the expression 7x?

A. x
B. 7
C. 1
D. 0

Correct Answer: B

Explanation:
The coefficient is the number multiplied by the variable. In 7x, the coefficient of x is 7.

Q4. Which of the following are like terms?

A. 3x and 3y
B. 5a and 7b
C. 4x and 9x
D. 2p and 2p²

Correct Answer: C

Explanation:
Like terms have the same variables with the same powers. 4x and 9x both have x.

Q5. How many terms are there in the expression 4a − 3b + 7?

A. 1
B. 2
C. 3
D. 4

Correct Answer: C

Explanation:
The terms are 4a, −3b, and 7. So, there are 3 terms.

Q6. Which of the following is a constant?

A. x
B. y
C. 6
D. a

Correct Answer: C

Explanation:
A constant is a fixed number. 6 is a fixed number.

Q7. Which expression represents “5 more than twice a number x”?

A. 5x + 2
B. 2x + 5
C. x + 10
D. 5x − 2

Correct Answer: B

Explanation:
Twice of x is 2x. 5 more than 2x is 2x + 5.

Shaktimatha CBSE Learning
Class 7 Mathematics – Chapter 12
MCQs with Explanations