Solution - Long subtraction
1,045
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 1 | 5 | 8 | |
| - | 1 | 1 | 3 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
8-3=5
| Place value | thousands | hundreds | tens | ones |
| 1 | 1 | 5 | 8 | |
| - | 1 | 1 | 3 | |
| 5 |
Subtract the numbers in the tens column from the top number:
5-1=4
| Place value | thousands | hundreds | tens | ones |
| 1 | 1 | 5 | 8 | |
| - | 1 | 1 | 3 | |
| 4 | 5 |
Subtract the numbers in the hundreds column from the top number:
1-1=0
| Place value | thousands | hundreds | tens | ones |
| 1 | 1 | 5 | 8 | |
| - | 1 | 1 | 3 | |
| 0 | 4 | 5 |
Write 1 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 1 | 5 | 8 | |
| - | 1 | 1 | 3 | |
| 1 | 0 | 4 | 5 |
The solution is: 1,045
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