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Name _____________________________
Date ___________________
Number Theory
Find the greatest common factor of each set of numbers.

1.   * This is a pre-made sheet.
Use the link at the top of the page for a printable page.
2.   50 and 60
3.   6 and 90
4.   63 and 51
5.   56 and 64
6.   40 and 96
7.   24 and 56
8.   63 and 77
9.   63 and 84
10.   32 and 84
11.   23 and 37
12.   36, 54, and 18
13.   4 and 80
14.   50, 70, and 80
15.   56 and 92
16.   26 and 25
17.   30, 76, and 82
18.   48 and 80
19.   80 and 34
20.   27 and 72
21.   54, 78, and 66
22.   65 and 85
23.   70 and 75
24.   2 and 92
25.   75, 96, and 81
26.   60 and 48
27.   77 and 66
28.   40 and 15
29.   20 and 60
30.   68, 80, and 12
31.   14 and 13
32.   41 and 73
33.   35, 45, and 65
34.   88, 56, and 24
35.   60 and 3
36.   27 and 53
37.   70 and 98
38.   10 and 78
39.   55 and 10
40.   83 and 39
41.   90 and 75
42.   96 and 84
43.   46 and 41
44.   * This is a pre-made sheet.
Use the link at the top of the page for a printable page.
45.   24, 96, and 60

 

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