48

72

48

72

48÷2

72÷2

24

36

24÷2

36÷2

12

18

12÷2

18÷2

6

9

6÷3

9÷3

2

3

or

48

72

2 × 2 × 2 × 2 × 3

2 × 2 × 2 × 3 × 3

2

3

or

Common Divisors for 48 and 72 are: 2, 2, 2 and 3

Greatest Common Divisor = 2 × 2 × 2 × 3 = 24

48÷24

72÷24

2

3

See 2/3 as a percent