Solution - Long subtraction
4,999
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (7) 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 (17).
| Place value | thousands | hundreds | tens | ones |
| 4 | 17 | |||
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
Subtract the numbers in the ones column from the top number:
17-8-0=9
| Place value | thousands | hundreds | tens | ones |
| 4 | 17 | |||
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
| 9 |
Because the upper digit (4) in the tens column is too small to get a positive difference, borrow 1 from the number to the left (50) which becomes (49) and get (14).
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 14 | ||
| 4 | 17 | |||
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
| 9 |
Subtract the numbers in the tens column from the top number:
14-3-2=9
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 14 | ||
| 4 | 17 | |||
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
| 9 | 9 |
Write 9 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 14 | ||
| 4 | 17 | |||
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
| 9 | 9 | 9 |
Write 4 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 14 | ||
| 4 | 17 | |||
| 5 | 0 | 5 | 7 | |
| 3 | 8 | |||
| - | 2 | 0 | ||
| 4 | 9 | 9 | 9 |
The solution is: 4,999
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