44

20

44

20

40

20

4

20

4

20

2

4

20

2

4÷2

20÷2

2

2

10

2

2÷2

10÷2

2

1

5

or

44

20

40

20

4

20

4

20

2

4

20

2

4

20

2

2 × 2

2 × 2 × 5

2

2

1

5

or

Common Divisors for 4 and 20 are: 2 and 2

Greatest Common Divisor = 2 × 2 = 4

2

44÷4

20÷4

2

1

5