Class 8 Maths MCQ – Exponents and Powers

This set of Class 8 Maths Chapter 12 Multiple Choice Questions & Answers (MCQs) focuses on “Exponents and Powers”. These MCQs are created based on the latest CBSE syllabus and the NCERT curriculum, offering valuable assistance for exam preparation.

1. What is the multiplicative inverse of 10-3?
a) 100
b) -100
c) \(\frac{1}{1000}\)
d) 1000
View Answer

Answer: d
Explanation: Multiplicative inverse of an = \(\frac{1}{a^n}\)
⇒ Multiplicative inverse of 10-3 = 103 = 1000.

2. What is the value of 10-6?
a) -0.000010
b) -0.0000010
c) 0.000010
d) 0.0000010
View Answer

Answer: c
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 10-6 = 0.000010.

3. Find the value of 3-2.
a) \(\frac{1}{9}\)
b) –\(\frac{1}{9}\)
c) 8
d) \(\frac{1}{8}\)
View Answer

Answer: a
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 3-2 = \(\frac{1}{3^2} = \frac{1}{9}\).
advertisement
advertisement

4. Find the unknown value: \(\frac{1}{729}\) = 9.
a) -4
b) -3
c) 3
d) 4
View Answer

Answer: b
Explanation: a-m = \(\frac{1}{a^m}\)
⇒ 9-3 = \(\frac{1}{9^3} = \frac{1}{729}\).

More MCQs on Class 8 Maths Chapter 12:

Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

To practice all chapters and topics of class 8 Mathematics, here is complete set of 1000+ Multiple Choice Questions and Answers.

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.