Vertically align numbers with Larger Number on top:
8 | 1 | |
− | 6 | 5 |
Subtract using place value:
Tens | Ones | |
---|---|---|
7 | 11 | |
81 | 8 | 1 |
65 | 6 | 5 |
Difference | 1 | 6 |
Column traversal from right to left
Ones column:
Ones column:
- Since 1 is less than 5, we have to borrow 1 from the Tens column
- As a result, 1 becomes 11, and 11 − 5 = 6
- The 8 in the Tens column becomes 7
Tens column:
- 7 − 6 = 1
7 | 11 | |
8 | 1 | |
− | 6 | 5 |
1 | 6 |
Therefore, the Difference between 81 and 65 is 16
Check computation by comparing Larger Number and the Sum of Smaller Number and Difference:
1 | ||
6 | 5 | |
1 | 6 | |
8 | 1 |
Sum of Smaller Number and Difference = 81
Sum of Smaller Number and Difference = Larger Number (81 = 81) ✓