Name _____________________________
Date ___________________
Number Theory
Find the greatest common factor of each set of numbers.
1.
40 and 80
2.
40 and 12
3.
84 and 8
4.
58 and 84
5.
77 and 88
6.
18 and 93
7.
40 and 90
8.
36 and 52
9.
85 and 50
10.
96 and 60
11.
14, 91, and 42
12.
7 and 90
13.
36 and 99
14.
44 and 25
15.
90 and 80
16.
84, 54, and 96
17.
20 and 90
18.
60 and 65
19.
56 and 40
20.
72, 90, and 27
21.
61 and 18
22.
71 and 15
23.
51, 12, and 60
24.
76 and 4
25.
88 and 68
26.
50 and 27
27.
80 and 24
28.
50 and 40
29.
76, 82, and 46
30.
7 and 10
31.
60, 95, and 55
32.
60, 66, and 78
33.
64 and 33
34.
50 and 26
35.
66 and 77
36.
10 and 40
37.
96 and 72
38.
60, 25, and 85
39.
5 and 13
40.
72 and 20
41.
97 and 80
42.
24, 56, and 16
43.
52 and 28
44.
78 and 21
45.
99 and 30
