Understanding powers and exponents becomes easier with regular practice. Chapter 2 Power Play Class 8 Maths Ganita Prakash Part 1 MCQs help students revise important concepts such as exponential form, laws of exponents, powers of 10, and scientific notation through objective questions.
This chapter of the CBSE Board Class 8 Maths syllabus builds a strong foundation for handling large numbers, small numbers, and repeated multiplication in a simpler way. Practicing MCQs also helps students check their understanding and improve their speed before exams.
These Class 8 MCQs are prepared to support quick revision and concept-based learning. Students can solve these questions to identify important patterns and strengthen their problem-solving skills. Explore more Class 8 Maths MCQs to practice chapter-wise questions and improve your Mathematics preparation.
Chapter 2 Power Play Class 8 Maths MCQs
Practice these MCQs to revise important concepts like powers, exponents, standard form, and improve your preparation.
Q1. Which of the following expressions has the same value as 3^4 × 2^3?
A) 216
B) 648
C) 324
D) 432
Answer: B) 648
Q2. What is the value of 8^3 ÷ 8?
A) 64
B) 512
C) 8
D) 32
Answer: A) 64
Q3. How many different 3-digit codes can be created using digits 0–9 if repetition of digits is allowed?
A) 100
B) 900
C) 1,000
D) 10,000
Answer: C) 1,000
Q4. Find the value of (-3)^4 × (-2)^2.
A) -324
B) 324
C) 162
D) -162
Answer: B) 324
Q5. Which exponential form represents the number 64?
A) 2^5
B) 4^2
C) 2^6
D) 8^3
Answer: C) 2^6
Q6. Which of the following numbers is a perfect sixth power?
A) 1
B) 125
C) 216
D) 343
Answer: A) 1
Q7. Calculate the value of 3^4.
A) 27
B) 81
C) 64
D) 12
Answer: B) 81
Q8. What is the value of any non-zero number raised to the power 0?
A) 0
B) Number itself
C) 1
D) Cannot be determined
Answer: C) 1
Q9. Simplify the expression 7^3 × 7^(-3).
A) 7
B) 49
C) 1
D) 343
Answer: C) 1
Q10. While multiplying powers with the same base, what operation is performed on the exponents?
A) Exponents are multiplied
B) Exponents are added
C) Exponents are divided
D) Exponents are subtracted
Answer: B) Exponents are added
Q11. Which of the following is the exponential form of 1296?
A) 6^4
B) 6^2
C) 6^3
D) 6^5
Answer: A) 6^4
Q12. A password contains 3 slots, and each slot can have digits from 0 to 9. How many different passwords are possible?
A) 10^2
B) 10^4
C) 10^3
D) 3^10
Answer: C) 10^3
Q13. If there are 4 × 10^8 objects and each object contains 10^3 smaller units, what is the total number of smaller units?
A) 4 × 10^11
B) 4 × 10^5
C) 40 × 10^8
D) 10^12
Answer: A) 4 × 10^11
Q14. Write 0.000056 in standard form.
A) 56 × 10^(-4)
B) 5.6 × 10^(-5)
C) 5.6 × 10^5
D) 0.56 × 10^(-6)
Answer: B) 5.6 × 10^(-5)
Q15. What is the usual form of 3.45 × 10^(-4)?
A) 0.00345
B) 0.0000345
C) 0.000345
D) 0.0345
Answer: C) 0.000345
Q16. Express 72.5 in scientific notation.
A) 7.25 × 10^1
B) 7.25 × 10^2
C) 72.5 × 10^1
D) 0.725 × 10^2
Answer: A) 7.25 × 10^1
Q17. Simplify: x^4 × x^6
A) x^24
B) x^2
C) x^10
D) x^6
Answer: C) x^10
Q18. What is the value of 10^6?
A) 100,000
B) 1,000,000
C) 10,000
D) 10,000,000
Answer: B) 1,000,000
Q19. Identify the base in the expression 9^5.
A) 5
B) 45
C) 9
D) 14
Answer: C) 9
Q20. Identify the exponent in the expression 7^8.
A) 7
B) 56
C) 15
D) 8
Answer: D) 8
Q21. Simplify the expression (5^2)^3.
A) 5^5
B) 5^6
C) 25^3
D) 5^9
Answer: B) 5^6
Q22. Which expression is equal to 4^(-2)?
A) 1/16
B) 16
C) -16
D) 1/8
Answer: A) 1/16
Q23. Find the value of 10^5 × 10^2.
A) 10^10
B) 10^3
C) 10^7
D) 10^5
Answer: C) 10^7
Q24. Calculate the value of 5^3.
A) 25
B) 125
C) 15
D) 625
Answer: B) 125
Q25. Which mathematical concept represents repeated multiplication of the same number?
A) Addition
B) Fraction
C) Exponents
D) Division
Answer: C) Exponents
Q26. How can 100000 be represented using powers of 10?
A) 10^6
B) 10^4
C) 10^5
D) 10^3
Answer: C) 10^5
Q27. Simplify: 3^2 × 3^3
A) 243
B) 81
C) 27
D) 729
Answer: A) 243
Q28. According to the power of a power rule, the exponents are:
A) Added
B) Subtracted
C) Multiplied
D) Divided
Answer: C) Multiplied
Q29. Scientific notation is mainly useful for writing:
A) Only prime numbers
B) Only whole numbers
C) Very large and very small numbers
D) Only even numbers
Answer: C) Very large and very small numbers
Q30. Find the value of 1^50.
A) 0
B) 50
C) 10
D) 1
Answer: D) 1
Quick Revision Before Solving Power Play MCQs
Before practicing Power Play questions, revise these important rules:
Important Laws of Exponents
- a^m × a^n = a^(m+n)
- a^m ÷ a^n = a^(m-n)
- (a^m)^n = a^(m×n)
- (a × b)^m = a^m × b^m
- a^0 = 1, where a ≠ 0
- a^(-n) = 1/a^n
Key Concepts
- Powers represent repeated multiplication of the same number.
- The number that is multiplied repeatedly is called the base.
- The small raised number that shows how many times the base is multiplied is called the exponent.
- Powers of 10 help us write very large and very small numbers easily.
Standard Form
A number in standard form is written as:
a × 10^n
where:
- a is a number greater than or equal to 1 and less than 10.
- n is an integer that represents the power of 10.
Important Topics Covered in Class 8 Maths Chapter 2 Power Play
| Topic | What You Learn |
| Powers and Exponents | Writing repeated multiplication in shorter form |
| Laws of Exponents | Simplifying expressions with powers |
| Zero Exponent Rule | Understanding why any non-zero number power zero equals 1 |
| Negative Exponents | Converting powers into reciprocal form |
| Powers of 10 | Representing large numbers easily |
| Standard Form | Writing very large and small numbers scientifically |
How These MCQs Help Students Prepare Better
Practicing Power Play Class 8 MCQ questions regularly helps students improve their understanding of mathematical patterns.
These questions help students:
- Improve calculation accuracy
- Remember exponent rules easily
- Revise the chapter quickly before exams
- Understand the application of powers
- Build confidence in solving Maths questions
MCQ practice also helps students identify mistakes and improve their speed during tests.
