Vertically align numbers with Larger Number on top:
| 7 | 0 | |
| − | 2 | 3 |
Subtract using place value:
| Tens | Ones | |
|---|---|---|
| 6 | 10 | |
| 70 | 7 | 0 |
| 23 | 2 | 3 |
| Difference | 4 | 7 |
Column traversal from right to left
Ones column:
Ones column:
- Since 0 is less than 3, we have to borrow 1 from the Tens column
- As a result, 0 becomes 10, and 10 − 3 = 7
- The 7 in the Tens column becomes 6
Tens column:
- 6 − 2 = 4
| 6 | 10 | |
| 7 | 0 | |
| − | 2 | 3 |
| 4 | 7 |
Therefore, the Difference between 70 and 23 is 47
Check computation by comparing Larger Number and the Sum of Difference and Smaller Number:
| 1 | ||
| 4 | 7 | |
| 2 | 3 | |
| 7 | 0 |
Sum of Difference and Smaller Number = 70
Sum of Difference and Smaller Number = Larger Number (70 = 70) ✓
