Solution - Long subtraction
564
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 6 | 1 | 2 | |
| - | 4 | 8 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (2) 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 (12).
| Place value | hundreds | tens | ones |
| 0 | 12 | ||
| 6 | 1 | 2 | |
| - | 4 | 8 | |
Subtract the numbers in the ones column from the top number:
12-8=4
| Place value | hundreds | tens | ones |
| 0 | 12 | ||
| 6 | 1 | 2 | |
| - | 4 | 8 | |
| 4 |
Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the digit (6) in the next number place which becomes (5) and get (10).
| Place value | hundreds | tens | ones |
| 5 | 10 | ||
| 0 | 12 | ||
| 6 | 1 | 2 | |
| - | 4 | 8 | |
| 4 |
Subtract the numbers in the tens column from the top number:
10-4=6
| Place value | hundreds | tens | ones |
| 5 | 10 | ||
| 0 | 12 | ||
| 6 | 1 | 2 | |
| - | 4 | 8 | |
| 6 | 4 |
Write 5 in the hundreds place.
| Place value | hundreds | tens | ones |
| 5 | 10 | ||
| 0 | 12 | ||
| 6 | 1 | 2 | |
| - | 4 | 8 | |
| 5 | 6 | 4 |
The solution is: 564
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