| A | B |
|---|
| What is the GCF of 4 and 8? | 4 |
| What is the GCF of 15 and 30? | 15 |
| What is the GCF of 24 and 16? | 8 |
| What is the GCF of 27 and 18? | 9 |
| What is the GCF of 51 and 12? | 3 |
| What is the GCF of 81 and 27? | 27 |
| What is the GCF of 48 and 16? | 16 |
| What is the GCF of 20 and 60? | 20 |
| What is the GCF of 49 and 14? | 7 |
| What is the GCF of 64 and 24? | 8 |
