NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Ex 12.1

NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Ex 12.1 are part of NCERT Solutions for Class 8 Maths. Here we have given NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Ex 12.1.

• Exponents and Powers Class 8 Ex 12.2

Board	CBSE
Textbook	NCERT
Class	Class 8
Subject	Maths
Chapter	Chapter 12
Chapter Name	Exponents and Powers
Exercise	Ex 12.1
Number of Questions Solved	7
Category	NCERT Solutions

NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Ex 12.1

Ex 12.1 Class 8 Maths Question 1.
Evaluate :
(i) 3^-2
(ii) (-4)^-2
(iii) \(\left( \frac { 1 }{ 2 } \right) ^{ -5 }\)
Solution:

Ex 12.1 Class 8 Maths Question 2.
Simplify and express the result in power notation with positive exponent:
(i) (-4)^-5 ÷ (-4)^-5
(ii) \(\left( \frac { 1 }{ { 2 }^{ 3 } } \right) ^{ 2 }\)
(iii) (-3)^-4 x \(\left( \frac { 5 }{ 3 } \right) ^{ 4 }\)
(iv) (3^-7 ÷ 3^-10) x 3^-5
Solution:

Ex 12.1 Class 8 Maths Question 3.
Find the value of :
(i) (3⁰ + 4^-1) x 2²
(ii) (2^-1 x 4^-1) ÷ 2^-2
(iii) \(\left( \frac { 1 }{ 2 } \right) ^{ -2 }+\left( \frac { 1 }{ 3 } \right) ^{ -2 }+\left( \frac { 1 }{ 4 } \right) ^{ -2 }\)
(iv) (3^-1 4^-1 + 5^-1)⁰
(v) \(\left\{ \left( \frac { -2 }{ 3 } \right) ^{ -2 } \right\} ^{ 2 }\)
Solution:

Ex 12.1 Class 8 Maths Question 4.
Evaluate
(i) \(\frac { { 8 }^{ -1 }\times { 5 }^{ 3 } }{ { 2 }^{ -4 } } \)
(ii) (5^-1 x 2^-1) x 6^-1
Solution:

Ex 12.1 Class 8 Maths Question 5.
Find the value of m for which 5^m + 5^-3 = 5⁵.
Solution:

Ex 12.1 Class 8 Maths Question 6.
Evaluate

Solution:

Ex 12.1 Class 8 Maths Question 7.
Simplify :

Solution:

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