Solution - Long subtraction
1,089
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (3) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (13).
| Place value | thousands | hundreds | tens | ones |
| 4 | 13 | |||
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
Subtract the numbers in the ones column from the top number:
13-4=9
| Place value | thousands | hundreds | tens | ones |
| 4 | 13 | |||
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
| 9 |
Because the upper digit (4) in the tens column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (14).
| Place value | thousands | hundreds | tens | ones |
| 1 | 14 | |||
| 4 | 13 | |||
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
| 9 |
Subtract the numbers in the tens column from the top number:
14-6=8
| Place value | thousands | hundreds | tens | ones |
| 1 | 14 | |||
| 4 | 13 | |||
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
| 8 | 9 |
Subtract the numbers in the hundreds column from the top number:
1-1=0
| Place value | thousands | hundreds | tens | ones |
| 1 | 14 | |||
| 4 | 13 | |||
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
| 0 | 8 | 9 |
Write 1 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 14 | |||
| 4 | 13 | |||
| 1 | 2 | 5 | 3 | |
| - | 1 | 6 | 4 | |
| 1 | 0 | 8 | 9 |
The solution is: 1,089
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