Factor tree/GCF
List two prime numbers
*examples may vary*
12/24
3/4
2 1/3
7/3
1/2 x 3/4
3/8
1/4 / 3/4
4 / 12
Make a factor tree for 20
*see student work*
9/63
1/7
5 2/6
32/6
3/8 x 1/6
3/ 48
3/8 / 2/5
15 / 16
give the GCF of 28 and 34
2
18/81
2/9
7 1/8
57/8
2/4 x 2/4
4 / 16
4/5 / 3/6
24 / 15
Give the GCF for 50 and 75
25
90/135
2/3
10 3/7
73/7
3 2/6 x 7/8
140/ 48
7/9 / 3/4
28 / 27
Find the GCF of 99 and 108
9
36/-81
4/-9
12 3/8
99/8
5 6/7 x 3/4
123 / 28
4/6 / 7/9
36 / 42