#### Chapters

Chapter 2: Linear Equations in One Variable

Chapter 3: Understanding Quadrilaterals

Chapter 4: Practical Geometry

Chapter 5: Data Handling

Chapter 6: Squares and Square Roots

Chapter 7: Cubes and Cube Roots

Chapter 8: Comparing Quantities

Chapter 9: Algebraic Expressions and Identities

Chapter 10: Visualising Solid Shapes

Chapter 11: Mensuration

Chapter 12: Exponents and Powers

Chapter 13: Direct and Inverse Proportions

Chapter 14: Factorisation

Chapter 15: Introduction to Graphs

Chapter 16: Playing with Numbers

#### NCERT Mathematics Class 8

## Chapter 12: Exponents and Powers

#### Chapter 12: Exponents and Powers Exercise 12.10 solutions [Pages 197 - 198]

Evaluate 3^{−2}

Evaluate (−4)^{−2}

Evaluate `(1/2)^(-5)`

Simplify and express the result in power notation with positive exponent.

(-4)^{5} ÷ (-4)^{8}

Simplify and express the result in power notation with positive exponent.

`(1/2^3)^2`

Find the value of.

(3^{0} + 4^{−1}) × 2^{2}

Find the value of.

(2^{−1} × 4^{−1}) ÷2^{−2}

Find the value of.

`(1/2)^(-2)+(1/3)^(-2)+(1/4)^(-2)`

Find the value of (3^{−1} + 4^{−1} + 5^{−1})^{0}

Find the value of `{((-2)/3)^(-2)}^2`

Evaluate `(8^(-1)xx5^(3))/2^(-4)`

Evaluate `(5^(-1)xx2^(-1))xx6^(-1)`

Find the value of *m* for which 5^{m} ÷5^{−3} = 5^{5}.

Evaluate `{(1/3)^(-1) - (1/4)^(-1)}^(-1)`

Evaluate `(5/8)^(-7) xx (8/5)^(-4)`

Simplify `(25 xx t^(-4))/(5^(-3) xx10xxt^(-5)) (t != 0)`

Simplify `(3^(-5) xx 10^(-5) xx 125)/(5^(-7) xx 6^(-5))`

#### Chapter 12: Exponents and Powers Exercise 12.20 solutions [Page 200]

Express the given numbers in standard form.

0.0000000000085

Express the given numbers in standard form.

0.00000000000942

Express the given numbers in standard form.

6020000000000000

Express the given numbers in standard form.

0.00000000837

Express the given numbers in standard form.

31860000000

Express the given numbers in usual form.

3.02 × 10^{−6}

Express the given numbers in usual form.

4.5 × 10^{4}

Express the given numbers in usual form

3 × 10^{−8}

Express the given numbers in standard form.

1.0001 × 10^{9}

Express the given numbers in standard form.

5.8 × 10^{12 }

Express the given numbers in standard form.

3.61492 × 10^{6}

Express the number appearing in the given statements in standard form

1 micron is equal to `1/1000000` m

Express the number appearing in the given statements in standard form

Charge of an electron is 0.000, 000, 000, 000, 000, 000, 16 coulomb.

Express the number appearing in the given statements in standard form

Size of a bacteria is 0.0000005 m

Express the number appearing in the given statements in standard form

Size of a plant cell is 0.00001275 m

Express the number appearing in the given statements in standard form

Thickness of a thick paper is 0.07 mm

In a stack there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the stack?

## Chapter 12: Exponents and Powers

#### NCERT Mathematics Class 8

#### Textbook solutions for Class 8

## NCERT solutions for Class 8 Mathematics chapter 12 - Exponents and Powers

NCERT solutions for Class 8 Maths chapter 12 (Exponents and Powers) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Mathematics Textbook for Class 8 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing such solutions so that students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Mathematics chapter 12 Exponents and Powers are Powers with Negative Exponents, Laws of Exponents, Use of Exponents to Express Small Numbers in Standard Form, Comparing Very Large and Very Small Numbers.

Using NCERT Class 8 solutions Exponents and Powers exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 8 prefer NCERT Textbook Solutions to score more in exam.

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