Class 8 Exam > Class 8 Notes > Mental Mathematics for Class 8 > Mental Maths Questions and Answers: Exponents and Powers
Mental Maths Questions and Answers: Exponents and Powers | Mental Mathematics for Class 8 PDF Download
| Download, print and study this document offline |
Please wait while the PDF view is loading
Page 1
QUESTIONS
1. Simplify:
a. (4)
3
b. (3)
4
c. (5)
4
d. (7)
3
2. Simplify:
a. (2)
-3
b. (1)
-10
c. (6)
-2
d. (8)
-3
3. Simplify and write the answer in positive exponential form
a. (?? )
?? ÷ (?? )
??
b. (?? -?? × ?? -?? ) ÷ ?? ??
c. (?? -?? × ?? ?? ) ÷ (?? )
??
d. (?? ?? + ?? -?? + ?? -?? +?? -?? )
??
4. Simplify:
a. ?? ?? × ?? ?? × ?? ??
b. ?? ?? × ?? ?? × ?? ??
c. (
?? ?? )
?? × (
?? ?? )
?? × (
?? ?? )
-??
d. (
?? ?? )
?? × (
?? ?? )
?? × ????
??
5. Simplify: (-?? )
-?? × (-?? )
??
6. Simplify: [(-?? )
?? × (-?? )
?? ] ÷ (?? )
??
7. Find the value of ?? if , (?? )
?? = (???? )
??
8. Write (?????? )
-?? in the exponential form as base 5.
9. Simplify: [(-
?? ?? )
?? ]
??
10. Find the value of ?? if , (
?? ?? )
?? =
??????
??????
11. Find the value of
?? ?? if , (
?? ?? )
?? × (
?? ????
)
-?? =
?? ??
12. Simplify: (?? )
-?? × (?? )
-?? × ?????? × (?? )
??
13. Simplify: (?? -?? + ?? -?? ) ÷ (?? + ?? )
14. Simplify: (?? -?? × ?? -?? ) ÷ ?? -??
15. Simplify: (?? -?? + ????
?? ) ÷ (?? )
-??
16. Find the value of (???? × ?? ?? ), if ?? = ?? .
17. If (?? )
-?? =
?? (?? )
????
, then find the value of x.
18. Simplify: ?? ?? × ?? -?? × ?? ?? × ?? -????
Page 2
QUESTIONS
1. Simplify:
a. (4)
3
b. (3)
4
c. (5)
4
d. (7)
3
2. Simplify:
a. (2)
-3
b. (1)
-10
c. (6)
-2
d. (8)
-3
3. Simplify and write the answer in positive exponential form
a. (?? )
?? ÷ (?? )
??
b. (?? -?? × ?? -?? ) ÷ ?? ??
c. (?? -?? × ?? ?? ) ÷ (?? )
??
d. (?? ?? + ?? -?? + ?? -?? +?? -?? )
??
4. Simplify:
a. ?? ?? × ?? ?? × ?? ??
b. ?? ?? × ?? ?? × ?? ??
c. (
?? ?? )
?? × (
?? ?? )
?? × (
?? ?? )
-??
d. (
?? ?? )
?? × (
?? ?? )
?? × ????
??
5. Simplify: (-?? )
-?? × (-?? )
??
6. Simplify: [(-?? )
?? × (-?? )
?? ] ÷ (?? )
??
7. Find the value of ?? if , (?? )
?? = (???? )
??
8. Write (?????? )
-?? in the exponential form as base 5.
9. Simplify: [(-
?? ?? )
?? ]
??
10. Find the value of ?? if , (
?? ?? )
?? =
??????
??????
11. Find the value of
?? ?? if , (
?? ?? )
?? × (
?? ????
)
-?? =
?? ??
12. Simplify: (?? )
-?? × (?? )
-?? × ?????? × (?? )
??
13. Simplify: (?? -?? + ?? -?? ) ÷ (?? + ?? )
14. Simplify: (?? -?? × ?? -?? ) ÷ ?? -??
15. Simplify: (?? -?? + ????
?? ) ÷ (?? )
-??
16. Find the value of (???? × ?? ?? ), if ?? = ?? .
17. If (?? )
-?? =
?? (?? )
????
, then find the value of x.
18. Simplify: ?? ?? × ?? -?? × ?? ?? × ?? -????
19. If ?? ?? × ??????
?? = (???? )
?? ,then find the value of ?? .
20. If ?? ?? ÷ ?? ????
=
?? ?? , then find the value of ?? .
21. If (?? ?? × ?? -?? )
?? = ?????? ,then find the value of ?? .
22. Write 0.0081 in the standard form.
23. Write 1/10000000 in the standard form.
24. Write 4050000 in the standard form.
25. If (?? )
????
= ?????? , then find the value of x.
26. Find the value of x if ????
?? × ????
?? = (?? )
?? .
27. Find the value of (?? ?? × ?? ?? ) ÷ ???? if ?? = ?? ?????? ?? = ?? .
28. Simplify: (v?? )
?? ÷ (v?? )
??
29. Write ?? . ?????? × ????
-?? in general form.
30. Write ?? . ?????????? × ????
?? in general form.
31. If ?? = (
?? ?? )
?? × (
?? ?? )
?? , them find the value of ?? ?? .
32. Simplify: (v ?? )
?? + ?? ?? + ?? ?? + ?? ?? .
33. Find the value of (
?? ????
)
-?? /?? .
34. Find the value of (?????? )
-?? /?? .
35. Simplify: v ?? × (?? )
?? ??
36. If ?? ?? =
?? ????
, then find the value of x.
37. Simplify: (???? )
?? ?? × (???? )
?? ?? .
38. Find the value of [?? ?? + ?? ?? + ????
?? ]
?? ?? .
39. Simplify: (?? )
?? ?? -?? ?? . (?? )
?? ?? -?? ?? . (?? )
?? ?? -?? ?? .
40. Simplify:
(?? )
?? +?? .(?? )
?? +?? .(?? )
?? +?? (?? )
?? .(?? )
?? .(?? )
??
41. Find the value of ?? - v?? if v ?? = ?? . ??????
42. Find the value of [(?? )
?? + (?? )
?? + (?? )
?? ]
?? ??
43. Simplify:
v
v
v ?? ?? ??
44. Simplify:
v
v?? ????
?? ??
45. If (
v?? ?? )
?? = ?? - (
?? ?? )
?? , then find the value of ?? .
Page 3
QUESTIONS
1. Simplify:
a. (4)
3
b. (3)
4
c. (5)
4
d. (7)
3
2. Simplify:
a. (2)
-3
b. (1)
-10
c. (6)
-2
d. (8)
-3
3. Simplify and write the answer in positive exponential form
a. (?? )
?? ÷ (?? )
??
b. (?? -?? × ?? -?? ) ÷ ?? ??
c. (?? -?? × ?? ?? ) ÷ (?? )
??
d. (?? ?? + ?? -?? + ?? -?? +?? -?? )
??
4. Simplify:
a. ?? ?? × ?? ?? × ?? ??
b. ?? ?? × ?? ?? × ?? ??
c. (
?? ?? )
?? × (
?? ?? )
?? × (
?? ?? )
-??
d. (
?? ?? )
?? × (
?? ?? )
?? × ????
??
5. Simplify: (-?? )
-?? × (-?? )
??
6. Simplify: [(-?? )
?? × (-?? )
?? ] ÷ (?? )
??
7. Find the value of ?? if , (?? )
?? = (???? )
??
8. Write (?????? )
-?? in the exponential form as base 5.
9. Simplify: [(-
?? ?? )
?? ]
??
10. Find the value of ?? if , (
?? ?? )
?? =
??????
??????
11. Find the value of
?? ?? if , (
?? ?? )
?? × (
?? ????
)
-?? =
?? ??
12. Simplify: (?? )
-?? × (?? )
-?? × ?????? × (?? )
??
13. Simplify: (?? -?? + ?? -?? ) ÷ (?? + ?? )
14. Simplify: (?? -?? × ?? -?? ) ÷ ?? -??
15. Simplify: (?? -?? + ????
?? ) ÷ (?? )
-??
16. Find the value of (???? × ?? ?? ), if ?? = ?? .
17. If (?? )
-?? =
?? (?? )
????
, then find the value of x.
18. Simplify: ?? ?? × ?? -?? × ?? ?? × ?? -????
19. If ?? ?? × ??????
?? = (???? )
?? ,then find the value of ?? .
20. If ?? ?? ÷ ?? ????
=
?? ?? , then find the value of ?? .
21. If (?? ?? × ?? -?? )
?? = ?????? ,then find the value of ?? .
22. Write 0.0081 in the standard form.
23. Write 1/10000000 in the standard form.
24. Write 4050000 in the standard form.
25. If (?? )
????
= ?????? , then find the value of x.
26. Find the value of x if ????
?? × ????
?? = (?? )
?? .
27. Find the value of (?? ?? × ?? ?? ) ÷ ???? if ?? = ?? ?????? ?? = ?? .
28. Simplify: (v?? )
?? ÷ (v?? )
??
29. Write ?? . ?????? × ????
-?? in general form.
30. Write ?? . ?????????? × ????
?? in general form.
31. If ?? = (
?? ?? )
?? × (
?? ?? )
?? , them find the value of ?? ?? .
32. Simplify: (v ?? )
?? + ?? ?? + ?? ?? + ?? ?? .
33. Find the value of (
?? ????
)
-?? /?? .
34. Find the value of (?????? )
-?? /?? .
35. Simplify: v ?? × (?? )
?? ??
36. If ?? ?? =
?? ????
, then find the value of x.
37. Simplify: (???? )
?? ?? × (???? )
?? ?? .
38. Find the value of [?? ?? + ?? ?? + ????
?? ]
?? ?? .
39. Simplify: (?? )
?? ?? -?? ?? . (?? )
?? ?? -?? ?? . (?? )
?? ?? -?? ?? .
40. Simplify:
(?? )
?? +?? .(?? )
?? +?? .(?? )
?? +?? (?? )
?? .(?? )
?? .(?? )
??
41. Find the value of ?? - v?? if v ?? = ?? . ??????
42. Find the value of [(?? )
?? + (?? )
?? + (?? )
?? ]
?? ??
43. Simplify:
v
v
v ?? ?? ??
44. Simplify:
v
v?? ????
?? ??
45. If (
v?? ?? )
?? = ?? - (
?? ?? )
?? , then find the value of ?? .
ANSWERS
Question
No.
Answer Question No. Answer
1.
a. 64 b. 81
c. 625 d. 343
19.
20.
21.
22.
?? = ??
?? = ??
?? = ????
?? . ?? × ????
-??
2.
a.
?? ?? b. 1
c.
?? ????
d.
?? ??????
23.
24.
25.
26.
27.
?? × ????
-??
?? . ???? × ????
??
?? = ??
?? = ????
12
3.
a. 4 b.
?? ?? ??
c.
?? ?? ?? d. 1
28.
29.
30.
31.
5
0.0009432
32
?? ??
4.
a. 1800 b. 4900
c.
?? ????
d.
?? ??
32.
33.
34.
35.
18
9
?? ????
4
5.
-
????
??????
36. -
?? ??
6. -
????????
?? 37. ????
7.
?? = ????
38. 12
8.
(?? )
-??
39. 1
9.
????
??????
40. (?? )
?? +?? +??
10. ?? = ?? 41. ?? . ??????
11.
?? ??
42. 2
12.
?? ??????
43.
(?? )
?? ????
13.
?? ????
44. ?? ??
14. 1 45. ?? = ??
15. 5
16. 36
17.
?? = ??
18.
?? ????
Read More
|
83 videos|70 docs|36 tests
|
FAQs on Mental Maths Questions and Answers: Exponents and Powers - Mental Mathematics for Class 8
| 1. What is an exponent in mathematics? |  |
Ans. An exponent in mathematics is a small number placed to the right and above another number, indicating how many times the base number should be multiplied by itself.
| 2. How do you calculate a number raised to an exponent? | |
Ans. To calculate a number raised to an exponent, you simply multiply the base number by itself the number of times indicated by the exponent.
| 3. What is the difference between an exponent and a power in mathematics? | |
Ans. An exponent is the small number indicating how many times to multiply the base number, while the power is the result of raising a number to an exponent.
| 4. Can exponents be negative numbers? | |
Ans. Yes, exponents can be negative numbers. A negative exponent indicates the reciprocal of the base number raised to the positive exponent.
| 5. How do you simplify expressions with exponents and powers? | |
Ans. To simplify expressions with exponents and powers, follow the rules of exponents such as multiplying exponents when the base numbers are the same, or dividing exponents when subtracting.
About this Document
|
4.90/5 Rating |
|
Nov 21, 2024 Last updated |
Document Description: Mental Maths Questions and Answers: Exponents and Powers for Class 8 2024 is part of Mental Mathematics for Class 8 preparation.
The notes and questions for Mental Maths Questions and Answers: Exponents and Powers have been prepared according to the Class 8 exam syllabus. Information about Mental Maths Questions and Answers: Exponents and Powers covers topics
like and Mental Maths Questions and Answers: Exponents and Powers Example, for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Mental Maths Questions and Answers: Exponents and Powers.
Introduction of Mental Maths Questions and Answers: Exponents and Powers in English is available as part of our Mental Mathematics for Class 8
for Class 8 & Mental Maths Questions and Answers: Exponents and Powers in Hindi for Mental Mathematics for Class 8 course.
Download more important topics related with notes, lectures and mock test series for Class 8
Exam by signing up for free. Class 8: Mental Maths Questions and Answers: Exponents and Powers | Mental Mathematics for Class 8
Description
Full syllabus notes, lecture & questions for Mental Maths Questions and Answers: Exponents and Powers | Mental Mathematics for Class 8 - Class 8 | Plus excerises question with solution to help you revise complete syllabus for Mental Mathematics for Class 8 | Best notes, free PDF download
Information about Mental Maths Questions and Answers: Exponents and Powers
In this doc you can find the meaning of Mental Maths Questions and Answers: Exponents and Powers defined & explained in the simplest way possible. Besides explaining types of
Mental Maths Questions and Answers: Exponents and Powers theory, EduRev gives you an ample number of questions to practice Mental Maths Questions and Answers: Exponents and Powers tests, examples and also practice Class 8
tests
|
Explore Courses for Class 8 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Objective type Questions
,Semester Notes
,Exam
,study material
,ppt
,shortcuts and tricks
,Viva Questions
,mock tests for examination
,Previous Year Questions with Solutions
,Free
,practice quizzes
,video lectures
,Mental Maths Questions and Answers: Exponents and Powers | Mental Mathematics for Class 8
,Important questions
,Extra Questions
,Mental Maths Questions and Answers: Exponents and Powers | Mental Mathematics for Class 8
,past year papers
,Summary
,Sample Paper
,Mental Maths Questions and Answers: Exponents and Powers | Mental Mathematics for Class 8
,MCQs
;
Additional Information about Mental Maths Questions and Answers: Exponents and Powers for Class 8 Preparation
Mental Maths Questions and Answers: Exponents and Powers Free PDF Download
The Mental Maths Questions and Answers: Exponents and Powers is an invaluable resource that delves deep into the core of the Class 8 exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the Mental Maths Questions and Answers: Exponents and Powers now and kickstart your journey towards success in the Class 8 exam.
Importance of Mental Maths Questions and Answers: Exponents and Powers
The importance of Mental Maths Questions and Answers: Exponents and Powers cannot be overstated, especially for Class 8 aspirants.
This document holds the key to success in the Class 8 exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
Mental Maths Questions and Answers: Exponents and Powers Notes
Mental Maths Questions and Answers: Exponents and Powers Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to Mental Maths Questions and Answers: Exponents and Powers.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, Mental Maths Questions and Answers: Exponents and Powers Notes on EduRev are your ultimate resource for success.
Mental Maths Questions and Answers: Exponents and Powers Class 8
The "Mental Maths Questions and Answers: Exponents and Powers Class 8 Questions" guide is a valuable resource for all aspiring students preparing for the
Class 8 exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study Mental Maths Questions and Answers: Exponents and Powers on the App
Students of Class 8 can study Mental Maths Questions and Answers: Exponents and Powers alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Mental Maths Questions and Answers: Exponents and Powers,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Mental Maths Questions and Answers: Exponents and Powers is prepared as per the latest Class 8 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup