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Greatest Common Factors

Directions: Find the greatest common factor for both numbers below.

1.

 

24, 60

 

2.

 

108, 5

 

3.

 

14, 5

 

4.

 

80, 48

 

5.

 

13, 18

 

6.

 

75, 40

 

7.

 

36, 8

 

8.

 

24, 16

 

9.

 

42, 63

 

10.

 

50, 60

 

11.

 

40, 80

 

12.

 

3, 2

 

13.

 

21, 14

 

14.

 

18, 27

 

15.

 

60, 72

 

16.

 

5, 8

 

17.

 

12, 84

 

18.

 

162, 3

 

19.

 

128, 48

 

20.

 

6, 12

 

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