Solution - Long subtraction
1,798
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (1) in the ones column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (11).
| Place value | thousands | hundreds | tens | ones |
| 0 | 11 | |||
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
Subtract the numbers in the ones column from the top number:
11-3-0=8
| Place value | thousands | hundreds | tens | ones |
| 0 | 11 | |||
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
| 8 |
Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (10).
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 0 | 11 | |||
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
| 8 |
Subtract the numbers in the tens column from the top number:
10-1=9
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 0 | 11 | |||
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
| 9 | 8 |
Write 7 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 0 | 11 | |||
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
| 7 | 9 | 8 |
Write 1 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 7 | 10 | |||
| 0 | 11 | |||
| 1 | 8 | 1 | 1 | |
| 3 | ||||
| - | 1 | 0 | ||
| 1 | 7 | 9 | 8 |
The solution is: 1,798
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