Soluzione - Long subtraction
740
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 2 | 8 | 3 | |
| - | 5 | 4 | 3 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
3-3=0
| Place value | thousands | hundreds | tens | ones |
| 1 | 2 | 8 | 3 | |
| - | 5 | 4 | 3 | |
| 0 |
Subtract the numbers in the tens column from the top number:
8-4=4
| Place value | thousands | hundreds | tens | ones |
| 1 | 2 | 8 | 3 | |
| - | 5 | 4 | 3 | |
| 4 | 0 |
Because the upper digit (2) in the hundreds 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 | thousands | hundreds | tens | ones |
| 0 | 12 | |||
| 1 | 2 | 8 | 3 | |
| - | 5 | 4 | 3 | |
| 4 | 0 |
Subtract the numbers in the hundreds column from the top number:
12-5=7
| Place value | thousands | hundreds | tens | ones |
| 0 | 12 | |||
| 1 | 2 | 8 | 3 | |
| - | 5 | 4 | 3 | |
| 7 | 4 | 0 |
Write 0 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 0 | 12 | |||
| 1 | 2 | 8 | 3 | |
| - | 5 | 4 | 3 | |
| 0 | 7 | 4 | 0 |
The solution is: 740
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