Soluzione - Long subtraction
117
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 1 | 2 | 3 | |
| - | 6 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (3) in the ones 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 | hundreds | tens | ones |
| 1 | 13 | ||
| 1 | 2 | 3 | |
| - | 6 | ||
Subtract the numbers in the ones column from the top number:
13-6=7
| Place value | hundreds | tens | ones |
| 1 | 13 | ||
| 1 | 2 | 3 | |
| - | 6 | ||
| 7 |
Write 1 in the tens place.
| Place value | hundreds | tens | ones |
| 1 | 13 | ||
| 1 | 2 | 3 | |
| - | 6 | ||
| 1 | 7 |
Write 1 in the hundreds place.
| Place value | hundreds | tens | ones |
| 1 | 13 | ||
| 1 | 2 | 3 | |
| - | 6 | ||
| 1 | 1 | 7 |
The solution is: 117
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