Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 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 (5) in the next number place which becomes (4) and get (15).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
Subtract the numbers in the ones column from the top number:
15-9=6
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 6 |
Subtract the numbers in the tens column from the top number:
4-4=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 0 | 6 |
Because the upper digit (3) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (13).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 13 | ||||
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 0 | 6 |
Subtract the numbers in the hundreds column from the top number:
13-6=7
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 13 | ||||
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 7 | 0 | 6 |
Because the upper digit (1) in the thousands 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 (11).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 11 | ||||
| 1 | 13 | ||||
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 7 | 0 | 6 |
Subtract the numbers in the thousands column from the top number:
11-8=3
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 11 | ||||
| 1 | 13 | ||||
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 3 | 7 | 0 | 6 |
Subtract the numbers in the ten thousands column from the top number:
6-4=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 11 | ||||
| 1 | 13 | ||||
| 4 | 15 | ||||
| 7 | 2 | 3 | 5 | 5 | |
| - | 4 | 8 | 6 | 4 | 9 |
| 2 | 3 | 7 | 0 | 6 |
The solution is: 23,706
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