Soluzione - Long subtraction
0,5
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths |
| 2 | , | 5 | |
| 1 | , | 5 | |
| - | 0 | , | 5 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (5) in the tenths 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 | ones | . | tenths |
| 1 | 15 | ||
| 2 | , | 5 | |
| 1 | , | 5 | |
| - | 0 | , | 5 |
| , |
Subtract the numbers in the tenths column from the top number:
15-5-5=5
| Place value | ones | . | tenths |
| 1 | 15 | ||
| 2 | , | 5 | |
| 1 | , | 5 | |
| - | 0 | , | 5 |
| , | 5 |
Subtract the numbers in the ones column from the top number:
1-1-0=0
| Place value | ones | . | tenths |
| 1 | 15 | ||
| 2 | , | 5 | |
| 1 | , | 5 | |
| - | 0 | , | 5 |
| 0 | , | 5 |
The solution is: 0,5
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