Exponents and Powers RS Aggarwal ICSE Class-8th Mathematics Goyal Brothers Prakashan Chapter-2 Solutions. We provide step by step Solutions of Exercise / lesson-2 Exponents and Powers  for ICSE Class-8 RS Aggarwal Mathematics  .

Our Solutions contain all type Questions with Exe-2 A, Exe-2 B (MCQ)  and Mental maths to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-8 Mathematics.

## Exponents and Powers RSAggarwal Solutions ICSE Class-8th Mathematics Goyal Brothers Prakashan Chapter-2

–: Select Topics :–

Exe-2 A,

MCQ Exe-2 B,

Mental Maths

## Introduction to Exponents and Powers

When the numbers given are very large like 54,32,00,00,000 then it is not easy to read them so we write them in the form of exponents.

Exponents make these numbers easy to read, write, understand and compare.

## Laws of Exponents

1. How to multiply powers with the same base?

If we have to multiply the powers which have the same base then we have to add the exponents.

am × an = am + n

Example

83 × 84 = 83 + 4 = 87

2. How to divide powers with the same base?

If we have to divide the powers which have the same base then we have to subtract the exponents.

3. How to take the power of a power?

If we have to take the power of a power then we have to multiply the exponents.

(am)n = amn

Example

(83)4 = 83 × 4 = 812

4. How to multiply the powers with the same exponents?

If we have to multiply the powers where the base is different but exponents are same then we will multiply the base.

ambm = (ab)m

Example

8343 = (8× 4)= 323

5. How to divide the powers with the same exponents?

If we have to divide the powers where the base is different but exponents are same then we will divide the base.

6. Numbers with Exponent Zero

Any number with zero exponents is equal to one irrespective of the base.

a° = 1

Example

8° = 1

7. Numbers with Exponent One

Any number with one as the exponent is equal to the number itself.

a1 = a

Example

81 = 8

8. Power with a Negative Exponent

Negative exponents can be converted into positive exponents.

simplify

simplify………….

### Exercise – 2 B (MCQ), Exponents and Powers RS Aggarwal ICSE Class-8th Mathematics Goyal Brothers Prakashan

Multiple Choice Question

choose the correct option in each of the following.

which……………equal

if…………….is

#### Question 3

the value…………..is

#### Question 4

the value…………..between

the……………….is

the……………….is

the……………….is

…………….

which……………..as

#### Question 10

if…………….respectively

#### Question 11

out …………….greatest.

if……………….x is…..

if……………….x is…..

if……………………to

if ……………….n is

if…………………equal

#### Question 20

the simplest value of………..

### Mental Maths Goyal Brothers Prakashan Chapter-2 ICSE Class-8 Maths

#### Question 1

fill in the blanks………….

#### Question 2

write true false………..

–: End of Exponents and Powers RS Aggarwal ICSE Class-8th Solutions :–

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