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) ✓