Soluzione - Long subtraction
6.427
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (4) in the ones 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 (14).
| Place value | thousands | hundreds | tens | ones |
| 5 | 14 | |||
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
Subtract the numbers in the ones column from the top number:
14-7=7
| Place value | thousands | hundreds | tens | ones |
| 5 | 14 | |||
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
| 7 |
Subtract the numbers in the tens column from the top number:
5-3=2
| Place value | thousands | hundreds | tens | ones |
| 5 | 14 | |||
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
| 2 | 7 |
Because the upper digit (3) in the hundreds 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 (13).
| Place value | thousands | hundreds | tens | ones |
| 6 | 13 | |||
| 5 | 14 | |||
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
| 2 | 7 |
Subtract the numbers in the hundreds column from the top number:
13-9=4
| Place value | thousands | hundreds | tens | ones |
| 6 | 13 | |||
| 5 | 14 | |||
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
| 4 | 2 | 7 |
Write 6 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 6 | 13 | |||
| 5 | 14 | |||
| 7 | 3 | 6 | 4 | |
| - | 9 | 3 | 7 | |
| 6 | 4 | 2 | 7 |
The solution is: 6,427
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