Soluzione - Long subtraction
936
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (5) in the ones column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (15).
| Place value | thousands | hundreds | tens | ones |
| 6 | 15 | |||
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
Subtract the numbers in the ones column from the top number:
15-9=6
| Place value | thousands | hundreds | tens | ones |
| 6 | 15 | |||
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
| 6 |
Subtract the numbers in the tens column from the top number:
6-3=3
| Place value | thousands | hundreds | tens | ones |
| 6 | 15 | |||
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
| 3 | 6 |
Because the upper digit (3) 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 (13).
| Place value | thousands | hundreds | tens | ones |
| 0 | 13 | |||
| 6 | 15 | |||
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
| 3 | 6 |
Subtract the numbers in the hundreds column from the top number:
13-4=9
| Place value | thousands | hundreds | tens | ones |
| 0 | 13 | |||
| 6 | 15 | |||
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
| 9 | 3 | 6 |
Write 0 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 0 | 13 | |||
| 6 | 15 | |||
| 1 | 3 | 7 | 5 | |
| - | 4 | 3 | 9 | |
| 0 | 9 | 3 | 6 |
The solution is: 936
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