Vertically align numbers with Larger Number on top:
5 | 5 | |
− | 2 | 7 |
Subtract using place value:
Tens | Ones | |
---|---|---|
4 | 15 | |
55 | 5 | 5 |
27 | 2 | 7 |
Difference | 2 | 8 |
Column traversal from right to left
Ones column:
Ones column:
- Since 5 is less than 7, we have to borrow 1 from the Tens column
- As a result, 5 becomes 15, and 15 − 7 = 8
- The 5 in the Tens column becomes 4
Tens column:
- 4 − 2 = 2
4 | 15 | |
5 | 5 | |
− | 2 | 7 |
2 | 8 |
Therefore, the Difference between 55 and 27 is 28
Check computation by comparing Larger Number and the Sum of Difference and Smaller Number:
1 | ||
2 | 8 | |
2 | 7 | |
5 | 5 |
Sum of Difference and Smaller Number = 55
Sum of Difference and Smaller Number = Larger Number (55 = 55) ✓