Solution - Long subtraction
8,025
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 8 | 1 | 2 | 5 | |
| - | 1 | 0 | 0 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
5-0=5
| Place value | thousands | hundreds | tens | ones |
| 8 | 1 | 2 | 5 | |
| - | 1 | 0 | 0 | |
| 5 |
Subtract the numbers in the tens column from the top number:
2-0=2
| Place value | thousands | hundreds | tens | ones |
| 8 | 1 | 2 | 5 | |
| - | 1 | 0 | 0 | |
| 2 | 5 |
Subtract the numbers in the hundreds column from the top number:
1-1=0
| Place value | thousands | hundreds | tens | ones |
| 8 | 1 | 2 | 5 | |
| - | 1 | 0 | 0 | |
| 0 | 2 | 5 |
Write 8 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 8 | 1 | 2 | 5 | |
| - | 1 | 0 | 0 | |
| 8 | 0 | 2 | 5 |
The solution is: 8,025
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