# ML Aggarwal Exponents and Powers Exe-4.2 Class 7 ICSE Maths Solutions

ML Aggarwal Exponents and Powers Exe-4.2 Class 7 ICSE Maths Solutions. We Provide Step by Step Answer of  Exe-4.2 Questions for Exponents and Powers as council prescribe guideline for upcoming board exam. Visit official Website CISCE for detail information about ICSE Board Class-7.

## ML Aggarwal Exponents and Powers Exe-4.2 Class 7 Maths Solutions

 Board ICSE Publications Avichal Publishig Company (APC) Subject Maths Class 7th Chapter-4 Exponents and Powers Writer ML Aggarwal Book Name Understanding Topics Solution of Exe-4.2 Questions Edition 2023-2024

### Exponents and Powers Exe-4.2

ML Aggarwal Class 7 ICSE Maths Solutions

Page-94

#### Question 2. Simplify and write the following in the exponential form:

(i) 53 × 57 × 512
(ii) a5 × a3 × a7
(iii) (712 × 73) ÷ 74

(i) 53 × 57 × 512

= 53+7+22

= 522
(ii) a5 × a3 × a7

= a5+3+7

= a15
(iii) (712 × 73) ÷ 74 g

= = 712+3 ÷ 74
= 712-4
= 711

#### Question 3. Simplify and write the following in the exponential form:

(i) (22)100
(ii) ((-7)6)5
(iii) (32)5 × (34)7

Using (am)n = amn

(i) (22)100
= 22×100
= 2200

(ii) ((-7)6)5

= (-7)30

(iii) (32)5 × (34)7

= 32×5 × 34×7
= 310× 328
= 338

(i) 25/64

(ii) -125/216

(iii) -343/729

#### Question -12. Express each of the following as a product of prime factors in the exponential form:

(i) 108 × 192
(ii) 729 × 64
(iii) 384 × 147

Exponents and Powers Exe-4.2

### ML Aggarwal Class 7 ICSE Maths Solutions

Page-95

#### Question 13. Simplify and write the following in the exponential form:

(i) 33 × 22 + 22 × 50
(ii) 92 + 112 – 22 × 3 × 170

#### Question- 14.

(i) By what number should we multiply 34 so that the product is 37?
(ii) By what number should be multiple (-6)-1 so that the product is 10-1?

(i) Product = 37
Required number = 37 ÷ 34

= 37-4

= 33

= 27

(ii) Product = 10-1
Required number = 10-1 ÷ (-6)-1

= (1/10) ÷(1/-6) = (1/10) x (-6/1) = (-3/5)