Soluzione - Long subtraction
4.317
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 6 | 4 | 4 | 6 | |
| - | 2 | 1 | 2 | 9 |
2. Subtract the numbers using long subtraction method
Because the upper digit (6) in the ones column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (16).
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 6 | 4 | 4 | 6 | |
| - | 2 | 1 | 2 | 9 |
Subtract the numbers in the ones column from the top number:
16-9=7
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 6 | 4 | 4 | 6 | |
| - | 2 | 1 | 2 | 9 |
| 7 |
Subtract the numbers in the tens column from the top number:
3-2=1
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 6 | 4 | 4 | 6 | |
| - | 2 | 1 | 2 | 9 |
| 1 | 7 |
Subtract the numbers in the hundreds column from the top number:
4-1=3
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 6 | 4 | 4 | 6 | |
| - | 2 | 1 | 2 | 9 |
| 3 | 1 | 7 |
Subtract the numbers in the thousands column from the top number:
6-2=4
| Place value | thousands | hundreds | tens | ones |
| 3 | 16 | |||
| 6 | 4 | 4 | 6 | |
| - | 2 | 1 | 2 | 9 |
| 4 | 3 | 1 | 7 |
The solution is: 4,317
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