Soluzione - Long subtraction
4.502
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 5 | 3 | 2 | 3 | |
| - | 8 | 2 | 1 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
3-1=2
| Place value | thousands | hundreds | tens | ones |
| 5 | 3 | 2 | 3 | |
| - | 8 | 2 | 1 | |
| 2 |
Subtract the numbers in the tens column from the top number:
2-2=0
| Place value | thousands | hundreds | tens | ones |
| 5 | 3 | 2 | 3 | |
| - | 8 | 2 | 1 | |
| 0 | 2 |
Because the upper digit (3) in the hundreds 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 | |||
| 5 | 3 | 2 | 3 | |
| - | 8 | 2 | 1 | |
| 0 | 2 |
Subtract the numbers in the hundreds column from the top number:
13-8=5
| Place value | thousands | hundreds | tens | ones |
| 4 | 13 | |||
| 5 | 3 | 2 | 3 | |
| - | 8 | 2 | 1 | |
| 5 | 0 | 2 |
Write 4 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 4 | 13 | |||
| 5 | 3 | 2 | 3 | |
| - | 8 | 2 | 1 | |
| 4 | 5 | 0 | 2 |
The solution is: 4,502
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