Soluzione - Long subtraction
1.179
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (0) 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 (10).
| Place value | thousands | hundreds | tens | ones |
| 5 | 10 | |||
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
Subtract the numbers in the ones column from the top number:
10-1=9
| Place value | thousands | hundreds | tens | ones |
| 5 | 10 | |||
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
| 9 |
Because the upper digit (5) in the tens 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 (15).
| Place value | thousands | hundreds | tens | ones |
| 1 | 15 | |||
| 5 | 10 | |||
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
| 9 |
Subtract the numbers in the tens column from the top number:
15-8=7
| Place value | thousands | hundreds | tens | ones |
| 1 | 15 | |||
| 5 | 10 | |||
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
| 7 | 9 |
Write 1 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 15 | |||
| 5 | 10 | |||
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
| 1 | 7 | 9 |
Write 1 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 1 | 15 | |||
| 5 | 10 | |||
| 1 | 2 | 6 | 0 | |
| - | 8 | 1 | ||
| 1 | 1 | 7 | 9 |
The solution is: 1,179
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