คำตอบ - Long subtraction
5
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones |
| 6 | |
| - | 1 |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
6-1=5
| Place value | ones |
| 6 | |
| - | 1 |
| 5 |
The solution is: 5
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