18
9 2
33 3 2
18 9,2 3,3,2
18 9,2 3,3,2
18 6 x 3 (2x3) x 3 Since 2 and 3 are prime numbers, the factor tree is complete. An alternate version of the factor tree for 18 is: 18 2 x 9 2 x (3x3)
Use a factor tree. 18 9,2 3,3,2
18 9,2 3,3,2
18 9,2 3,3,2
18 9,2 3,3,2
8 4,2 2,2,2 18 9,2 3,3,2 The GCF is 2.
9 3,3 18 6,3 2,3,3 The GCF is 9.
18 9,2 3,3,2 30 15,2 5,3,2 42 21,2 7,3,2
factor tree of 216
IT IS PRIME there is no factor tree