Class 7 Exam  >  Class 7 Notes  >  Mathematics (Maths) Class 7  >  Very Short Question Answers: Exponents and Powers

Class 7 Maths Chapter 10 Question Answers - Exponents and Powers

Q1: Find 28.
Ans: 
Given: 28
We need to find the value of the given exponent.
We can rewrite 28 to find its value as
28 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 = 256

Q2: Find (-4)3.
Ans:
Given: (-4)3
We need to find the value of a given exponent.
We can rewrite (-4)3 to find its value as
(-4)3 = -4 × -4 × -4 = -64

Q3: a0 = _____?
Ans: 
Given: a0
We need to find the value of a given expression.
We know that if 0 is the power of any number then the value of the number is always 1. Therefore, a0 = 1.

Q4: Express the following in exponential form 2 × 2 × a × a.
Ans:
Given: 2 × 2 × a × a We need to write the given expression as an exponential form. A number can be written in its exponential form if we raise the power of the number by the exponent. Therefore, exponential form of 2 × 2 × a ×a is
= 2 × 2 × a × a
= 22 × a2
= 4a2 

Q5: am × an =_______?
Ans: 
Given: am × an 
We need to fill in the blanks.
Therefore, am × an = am+n 

The document Class 7 Maths Chapter 10 Question Answers - Exponents and Powers is a part of the Class 7 Course Mathematics (Maths) Class 7.
All you need of Class 7 at this link: Class 7
76 videos|345 docs|39 tests

Top Courses for Class 7

76 videos|345 docs|39 tests
Download as PDF
Explore Courses for Class 7 exam

Top Courses for Class 7

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Extra Questions

,

Class 7 Maths Chapter 10 Question Answers - Exponents and Powers

,

Sample Paper

,

Previous Year Questions with Solutions

,

ppt

,

Free

,

MCQs

,

study material

,

Semester Notes

,

Class 7 Maths Chapter 10 Question Answers - Exponents and Powers

,

past year papers

,

Exam

,

Class 7 Maths Chapter 10 Question Answers - Exponents and Powers

,

Viva Questions

,

practice quizzes

,

Important questions

,

video lectures

,

mock tests for examination

,

Objective type Questions

,

shortcuts and tricks

,

Summary

,

pdf

;