1. What are the primes under 100?
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97...

2. 36 Factors, Multiples ...and Primes PRIME FACTOR DECOMPOSITION
This is the process whereby a number is expressed as a product of its prime factors.
Example: Express the following numbers as products of their prime factors. 36 36 60 24
770
36 = 2 x 2 x 3 x 3
= 22 x 32 2 18 2 9 3 3

3. 60 Factors, Multiples ...and Primes PRIME FACTOR DECOMPOSITION
This is the process whereby a number is expressed as a product of its prime factors.
Example: Express the following numbers as products of their prime factors. 60 36 60 24
770
60 = 2 x 2 x 3 x 5
= 22 x 3 x 5 2 30 2 15 3 5

4. 24 Factors, Multiples ...and Primes PRIME FACTOR DECOMPOSITION
This is the process whereby a number is expressed as a product of its prime factors.
Example: Express the following numbers as products of their prime factors. 24 36 60 24
770
24 = 2 x 2 x 2 x 3
= 23 x 3 2 12 2 6 2 3

5. 770 Factors, Multiples ...and Primes PRIME FACTOR DECOMPOSITION
This is the process whereby a number is expressed as a product of its prime factors.
Example: Express the following numbers as products of their prime factors.
770 36 60 24
770
770 = 2 x 5 x 7 x 11 10 77 2 5 7 11

6. Factors, Multiples ...and Primes PRIME FACTOR DECOMPOSITION
This is the process whereby a number is expressed as a product of its prime factors.
Exercise: Express the following numbers as products of their prime factors. 16 40 56
100 38
108 34
16 = 24
40 = 23 x 5
56 =23 x 7
100 = 22 x 52
38 = 2 x 19
108 = 22 x 33
34 = 2 x 17

7. Factors, Multiples
...and Primes
HCF using PRIME FACTORS