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) ✓