Soluzione - Long subtraction
756
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
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 2 from the digit (8) in the next number place which becomes (6) and get (20).
| Place value | thousands | hundreds | tens | ones |
| 6 | 20 | |||
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
Subtract the numbers in the ones column from the top number:
20-8-6=6
| Place value | thousands | hundreds | tens | ones |
| 6 | 20 | |||
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
| 6 |
Subtract the numbers in the tens column from the top number:
6-0-1=5
| Place value | thousands | hundreds | tens | ones |
| 6 | 20 | |||
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
| 5 | 6 |
Because the upper digit (0) 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 (10).
| Place value | thousands | hundreds | tens | ones |
| 0 | 10 | |||
| 6 | 20 | |||
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
| 5 | 6 |
Subtract the numbers in the hundreds column from the top number:
10-1-2=7
| Place value | thousands | hundreds | tens | ones |
| 0 | 10 | |||
| 6 | 20 | |||
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
| 7 | 5 | 6 |
Write 0 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 0 | 10 | |||
| 6 | 20 | |||
| 1 | 0 | 8 | 0 | |
| 1 | 0 | 8 | ||
| - | 2 | 1 | 6 | |
| 0 | 7 | 5 | 6 |
The solution is: 756
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