Solution - Long subtraction
1,889
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 9 | 9 | 9 | |
| - | 1 | 1 | 0 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
9-0=9
| Place value | thousands | hundreds | tens | ones |
| 1 | 9 | 9 | 9 | |
| - | 1 | 1 | 0 | |
| 9 |
Subtract the numbers in the tens column from the top number:
9-1=8
| Place value | thousands | hundreds | tens | ones |
| 1 | 9 | 9 | 9 | |
| - | 1 | 1 | 0 | |
| 8 | 9 |
Subtract the numbers in the hundreds column from the top number:
9-1=8
| Place value | thousands | hundreds | tens | ones |
| 1 | 9 | 9 | 9 | |
| - | 1 | 1 | 0 | |
| 8 | 8 | 9 |
Write 1 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 9 | 9 | 9 | |
| - | 1 | 1 | 0 | |
| 1 | 8 | 8 | 9 |
The solution is: 1,889
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