52
26,2
13,2,2
78
39,2
13,3,2
13 x 2 = 26, the GCF
44 22,2 11,2,2 55 11,5 The GCF is 11.
2010,25,2,24515,35,3,3The GCF is 5.
6432,216,2,28,2,2,24,2,2,2,22,2,2,2,2,211457,219,3,2The GCF is 2.
All I did was make a factor tree. The GCF (Greatest Common Factor) is 5. :)
21 3,7
listing method , factor tree
4
279,33,3,34515,35,3,33 x 3 = 9, the GCF
142,7282,142,2,72 x 7 = 14, the GCF
You need at least two factor trees to find a GCF.
The GCF is 2.The GCF is 2.
1