Given Numbers from Greatest to Least: 15, 12, 7
| Tens | Ones | |
|---|---|---|
| Carry Over | 1 | |
| 15 | 1 | 5 |
| 12 | 1 | 2 |
| 7 | 7 | |
| Sum | 3 | 4 |
| * | 14 |
* The number in the last row represents the sum of a Column greater than 9, with the digit in the Tens place corresponding to the Carry Over in the adjacent column
Addition of numbers as illustrated in the Place Value Chart:
| 1 | ||
| 1 | 5 | |
| 1 | 2 | |
| 7 | ||
| 3 | 4 |
Therefore, the Sum of 7+12+15 = 34
