Addition
22+5
27
2/2
1
5-4
1
2x5
10
What is the GCF of 2 and 4?
2
30+15
45
18/3
6
12-5
7
3x3
9
What is the GCF of 9 and 18?
9
250+35
285
36/12
3
36-15
21
12x12
144
What is the GCF of 8 and 24?
8
525+196
721
132/4
33
183-21
162
19x4
76
What is the GCF of 33 and 990
33
628+172
800
121/11
11
975-275
700
15x3
45
What is the GCF of 15 and 45?
15