Exponents and Powers RS Aggarwal ICSE Class-8th Maths Goyal Brothers

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 RS Aggarwal Solutions ICSE Class-8th Mathematics Goyal Brothers Prakashan Chapter-2

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–: Select Topics :–

 

Exe-2 A,

MCQ Exe-2 B, 

Mental Maths

 

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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.

a^m × aⁿ = a^{m + n}

Example

8³ × 8⁴ = 8^{3 + 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.

(a^m)ⁿ = a^mn

Example

(8³)⁴ = 8^{3 × 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.

a^mb^m = (ab)^m

Example

8³4³ = (8× 4)³ = 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.

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Exercise – 2 A Exponents and Powers RS Aggarwal ICSE Class-8th Mathematics Goyal Brothers Prakashan

Question 1

simplify

Question 16

simplify………….

 

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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.

Question 1

which……………equal

Question 2

if…………….is

Question 3

the value…………..is

Question 4

the value…………..between

Question 5

the……………….is

 Question 6

the……………….is

Question 7

the……………….is

Question 8

…………….

 Question 9

which……………..as

Question 10

if…………….respectively

 Question 11

out …………….greatest.

Question 13

if……………….x is…..

Question 14

if……………….x is…..

Question 17

if……………………to

Question 18

if ……………….n is

Question 19

if…………………equal

Question 20

the simplest value of………..

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

Question 1

fill in the blanks………….

Answer

Question 2

write true false………..

Answer

 

 

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

 

Return to- RS Aggarwal Solutions for ICSE Class-8 Goyal Brothers Prakashan

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