Solution - Long subtraction
5,568
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
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 number to the left (50) which becomes (49) and get (17).
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 17 | ||
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
Subtract the numbers in the ones column from the top number:
17-9=8
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 17 | ||
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
| 8 |
Subtract the numbers in the tens column from the top number:
9-3=6
| Place value | thousands | hundreds | tens | ones |
| 4 | 9 | 17 | ||
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
| 6 | 8 |
Because the upper digit (4) in the hundreds 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 (14).
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 4 | 9 | 17 | ||
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
| 6 | 8 |
Subtract the numbers in the hundreds column from the top number:
14-9=5
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 4 | 9 | 17 | ||
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
| 5 | 6 | 8 |
Subtract the numbers in the thousands column from the top number:
7-2=5
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 4 | 9 | 17 | ||
| 8 | 5 | 0 | 7 | |
| - | 2 | 9 | 3 | 9 |
| 5 | 5 | 6 | 8 |
The solution is: 5,568
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