66

12

66

12

60

12

6

12

6

12

5

6

12

5

6÷2

12÷2

5

3

6

5

3÷3

6÷3

5

1

2

or

66

12

60

12

6

12

6

12

5

6

12

5

6

12

5

2 × 3

2 × 2 × 3

5

5

1

2

or

Common Divisors for 6 and 12 are: 2 and 3

Greatest Common Divisor = 2 × 3 = 6

5

66÷6

12÷6

5

1

2