Exercise No. 1B

NOTE: Answers to all questions are given at the end of this exercise.

Question No. 1:

Express the following using index notation:

(a) 7 x 7

(b) 2 x 2 x 5 x 5

(c) 3 x 7 x 7 x 7

(d) 5 x 5 x 11 x 11 x 11

(e) 2 x 2 x 13 x 13 x 31 x 2

(f) 5 x 5 x 5 x 19 x 29 x 19 x 23 x 29

 

Question No. 2:

Express each of the following as a product of prime factors using index notation:

(a) 28

(b) 48

(c) 54

(d) 88

(e) 108

(f) 144

(g) 192

(h) 256

 

Question No. 3:

Complete the following factor trees:

(a) 8

(b) 36

(c) 30

(d) 72

 

Question No. 4:

Factorise each of the following numbers into prime factors:

(a) 100

(b) 125

(c) 147

(d) 216

(e) 225

(f) 360

(g) 567

(h) 648


Answers

(from left to right)

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