Vertically align numbers with Larger Number on top:
| 1 | 7 | |
| − | 1 | 0 |
Subtract using place value:
| Tens | Ones | |
|---|---|---|
| 17 | 1 | 7 |
| 10 | 1 | 0 |
| Difference | 7 |
Column traversal from right to left
Ones column:
Ones column:
- 7 − 0 = 7
Tens column:
- 1 − 1 = 0
Note: Leading zero is dropped
| 1 | 7 | |
| − | 1 | 0 |
| 7 |
Therefore, the Difference between 17 and 10 is 7
Check computation by comparing Larger Number and the Sum of Smaller Number and Difference:
| 1 | 0 | |
| 7 | ||
| 1 | 7 |
Sum of Smaller Number and Difference = 17
Sum of Smaller Number and Difference = Larger Number (17 = 17) ✓
