Name________________________________________________________________
Grade 6

Greatest Common Factor

Find the Greatest Common Factor for each set of numbers.

1.   10 and 5

 
2.   10 and 2

 
3.   14 and 7

 
4.   15 and 10

 
5.   24 and 6

 
6.   40 and 10

 
7.   3 and 21

 
8.   50 and 30

 
9.   20 and 40

 
10.   25 and 15

 
11.   36 and 12

 
12.   11 and 77

 
13.   22 and 40

 
14.   16 and 8

 
15.   45 and 15

 
16.   24 and 6

 
17.   25 and 50
18.   9 and 18

 
19.   56 and 8

 
20.   6 and 10

 
21.   9 and 99