Common Factors
21
1,7
6
12
6
14
1,2,7,14
54ft.-4yd.=___yd.
14 yd.
Add
9/17
3/17
4/17
16/17
4
6
1,2
8
20
4
21
1,3,7,21
17gal.+41qt.=___qt.
109 qt.
9/11
5/11
4/11
9
12
1,3
9
15
3
20
1,2,4,5,10,20
39cL+4L=___cL
439 cL
Add
14 3/8
29 2/8
43 5/8
10
20
30
1,2,5,10
16
20
4
32
1,2,4,8,16,32
70dm+3m=___m
10 m
Subtract
56 3/7
37 2/7
19 1/7
6
8
12
1,2
12
18
24
6
54
1,2,3,6,9,27,54
3lb.-9oz.=___oz.
39 oz.
Add
9 1/11
6 3/11
5 5/11
20 9/11