Solution:
1. Rewrite the problem: 25 - 16
2. Break down the numbers by place value:
- Tens column: 2 (for 20 in 25) and 1 (for 10 in 16)
- Ones column: 5 (for 5 in 25) and 6 (for 6 in 16)
3. Start with the ones column:
- We need to subtract 6 from 5.
- Since 5 < 6, regroup by borrowing 1 tens (which is 10from the tens column.
4. After regrouping:
- The tens column reduces by 1 from 2 to 1 (20 becomes 10).
- The ones column after borrowing becomes 15 (5 + 10).
5. Subtract in the ones column:
- 15 - 6 = 9
6. Subtract in the tens column:
- 1 - 1 = 0
7. So, the final answer is:
- Combine the results: 09 (or simply 9