Vertically align numbers with Larger Number on top:
| 1 | 0 | |
| − | 2 |
Subtract using place value:
| Tens | Ones | |
|---|---|---|
| 0 | 10 | |
| 10 | 1 | 0 |
| 2 | 2 | |
| Difference | 8 |
Column traversal from right to left
Ones column:
Ones column:
- Since 0 is less than 2, we have to borrow 1 from the Tens column
- As a result, 0 becomes 10, and 10 − 2 = 8
- The 1 in the Tens column becomes 0
Tens column:
- 0 − 0 = 0
Note: Leading zero is dropped
| 0 | 10 | |
| 1 | 0 | |
| − | 2 | |
| 8 |
Therefore, the Difference between 10 and 2 is 8
Check computation by comparing Larger Number and the Sum of Difference and Smaller Number:
| 1 | ||
| 8 | ||
| 2 | ||
| 1 | 0 |
Sum of Difference and Smaller Number = 10
Sum of Difference and Smaller Number = Larger Number (10 = 10) ✓
