68

52

68

52

52

52

16

52

16

52

1

16

52

1

16÷2

52÷2

1

8

26

1

8÷2

26÷2

1

4

13

or

68

52

52

52

16

52

16

52

1

16

52

1

16

52

1

2 × 2 × 2 × 2

2 × 2 × 13

1

1

4

13

or

Common Divisors for 16 and 52 are: 2 and 2

Greatest Common Divisor = 2 × 2 = 4

1

68÷4

52÷4

1

4

13