| A | B |
|---|
| 1 | Is it an integer? |
| 2 | Is it even? (Does it end in 2,4,6,8, or 0) |
| 3 | the sum of the digits is divisible by 3. |
| 4 | Can you divide the last 2 digits by 4? |
| 5 | Does it end in 5 or 0? |
| 6 | Is it divisible by 2 and 3? |
| 7 | 2 * the last digit, subtracted from the other digits--do you get a multiple of 7? |
| 8 | Are the last 3 digits divisible by 8? |
| 9 | The sum of the digits is divisible by 9 |
| 10 | Does it end in 0? |
| 15 | Is it divisible by 3 and 5? |
