Vertically align numbers with Larger Number on top:
| 0 | . | 7 | |
| − | 0 | . | 3 |
Subtract using place value:
| Ones | Tenths | ||
|---|---|---|---|
| 0.7 | 0 | . | 7 |
| 0.3 | 0 | . | 3 |
| Difference | 0 | . | 4 |
Column traversal from right to left
Tenths column:
Tenths column:
- 7 − 3 = 4
Ones column:
- 0 − 0 = 0
| 0 | . | 7 | |
| − | 0 | . | 3 |
| 0 | . | 4 |
Therefore, the Difference between 0.7 and 0.3 is 0.4
Check computation by comparing Larger Number and the Sum of Difference and Smaller Number:
| 0 | . | 4 | |
| 0 | . | 3 | |
| 0 | . | 7 |
Sum of Difference and Smaller Number = 0.7
Sum of Difference and Smaller Number = Larger Number (0.7 = 0.7) ✓
