Question

Q1: From the list of numbers 3 5 7 9 11 15 24 (a) Write down a factor of 12 (b) Write down a factor of 28 (c) Write down a factor of 81 Q2: Express 100 as a product of its prime factors using factor tree. Q3. A number is written as a product of its prime factors as 2 × 3² × 5 Work out the number. Q4: Check if 151 is a prime number? answer them all

Answer 1

Answer:

Q1. a) 3

b) 7

c) 9

(Q 2 is quite hard to type so I'll do at last)

Q3. 2 × 9× 5

= 18 ×5

= 90

Q4. yes, it is a prime number.

Q2. 100

10 10

5 2 5 2

(hope you understand it)

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