Soluzione - Long subtraction
132
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 3 | 3 | 0 | |
| - | 1 | 9 | 8 |
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 (3) in the next number place which becomes (2) and get (10).
| Place value | hundreds | tens | ones |
| 2 | 10 | ||
| 3 | 3 | 0 | |
| - | 1 | 9 | 8 |
Subtract the numbers in the ones column from the top number:
10-8=2
| Place value | hundreds | tens | ones |
| 2 | 10 | ||
| 3 | 3 | 0 | |
| - | 1 | 9 | 8 |
| 2 |
Because the upper digit (2) in the tens column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (12).
| Place value | hundreds | tens | ones |
| 2 | 12 | ||
| 2 | 10 | ||
| 3 | 3 | 0 | |
| - | 1 | 9 | 8 |
| 2 |
Subtract the numbers in the tens column from the top number:
12-9=3
| Place value | hundreds | tens | ones |
| 2 | 12 | ||
| 2 | 10 | ||
| 3 | 3 | 0 | |
| - | 1 | 9 | 8 |
| 3 | 2 |
Subtract the numbers in the hundreds column from the top number:
2-1=1
| Place value | hundreds | tens | ones |
| 2 | 12 | ||
| 2 | 10 | ||
| 3 | 3 | 0 | |
| - | 1 | 9 | 8 |
| 1 | 3 | 2 |
The solution is: 132
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