Vertically align numbers with Larger Number on top:
| 6 | 6 | |
| − | 5 | 4 |
Subtract using place value:
| Tens | Ones | |
|---|---|---|
| 66 | 6 | 6 |
| 54 | 5 | 4 |
| Difference | 1 | 2 |
Column traversal from right to left
Ones column:
Ones column:
- 6 − 4 = 2
Tens column:
- 6 − 5 = 1
| 6 | 6 | |
| − | 5 | 4 |
| 1 | 2 |
Therefore, the Difference between 66 and 54 is 12
Check computation by comparing Larger Number and the Sum of Smaller Number and Difference:
| 5 | 4 | |
| 1 | 2 | |
| 6 | 6 |
Sum of Smaller Number and Difference = 66
Sum of Smaller Number and Difference = Larger Number (66 = 66) ✓
