| 1. | What are the common multiples of 2 and 3? |
| | Multiples of 2 are: 2, 4, 6, 8, 10, 12, 14, 16, 18... |
| | Multiples of 3 are: 3, 6, 9, 12, 15, 18, 21... |
| | So common multiples are 6, 12, 18... |
| 2. | What are the common multiples of 3 and 5? |
| | Multiples of 3 are: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45... |
| | Multiples of 5 are: 5, 10, 15, 20, 25, 30, 35, 40, 45 ... |
| | So common multiples are 15, 30 and 45... |
| 3. | What are the common multiples of 5 and 7? |
| | Multiples of 5 are: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70 ... |
| | Multiples of 7 are: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70... |
| | So common multiples are 35 and 70... |
| 4. | What are the common multiples of 3 and 8? |
| | Multiples of 3 are: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48... |
| | Multiples of 8 are: 8, 16, 24, 32, 40, 48, 56, ... |
| | So common multiples are 24 and 48... |
| 5. | What are the common multiples of 4 and 6? |
| | Multiples of 4 are: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, ... |
| | Multiples of 6 are: 6, 12, 18, 24, 30, 36, 42, 48, 54... |
| | So common multiples are 12, 24, 36 and 48... |
| 6. | What are the common multiples of 6 and 9? |
| | Multiples of 6 are: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, ... |
| | Multiples of 9 are: 9, 18, 27, 36, 45, 54, 63... |
| | So common multiples are 18, 36 and 54... |
| 7. | What are the common multiples of 3, 6 and 8? |
| | Multiples of 3 are: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, ... |
| | Multiples of 6 are: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, ... |
| | Multiples of 8 are: 8, 16, 24, 32, 40, 48, 56, ... |
| | So common multiples are 24 and 48... |
