Megoldás - Long subtraction
26,5
Lépésről lépésre magyarázat
1. Rewrite the numbers from top to bottom, aligned by their place values
| Helyiérték | tízesek | egyesek | . | tizedek |
| 3 | 1 | |||
| 1 | , | 5 | ||
| - | 3 | |||
| , |
Put zeros in the blank number places:
| Helyiérték | tízesek | egyesek | . | tizedek |
| 3 | 1 | , | 0 | |
| 1 | , | 5 | ||
| - | 3 | , | 0 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the tizedek 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).
| Helyiérték | tízesek | egyesek | . | tizedek |
| 0 | 10 | |||
| 3 | 1 | , | 0 | |
| 1 | , | 5 | ||
| - | 3 | , | 0 | |
| , |
Subtract the numbers in the tizedek column from the top number:
10-0-5-0=5
| Helyiérték | tízesek | egyesek | . | tizedek |
| 0 | 10 | |||
| 3 | 1 | , | 0 | |
| 1 | , | 5 | ||
| - | 3 | , | 0 | |
| , | 5 |
Because the upper digit (0) in the egyesek 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).
| Helyiérték | tízesek | egyesek | . | tizedek |
| 2 | 10 | |||
| 0 | 10 | |||
| 3 | 1 | , | 0 | |
| 1 | , | 5 | ||
| - | 3 | , | 0 | |
| , | 5 |
Subtract the numbers in the egyesek column from the top number:
10-1-3=6
| Helyiérték | tízesek | egyesek | . | tizedek |
| 2 | 10 | |||
| 0 | 10 | |||
| 3 | 1 | , | 0 | |
| 1 | , | 5 | ||
| - | 3 | , | 0 | |
| 6 | , | 5 |
Write 2 in the tízesek place.
| Helyiérték | tízesek | egyesek | . | tizedek |
| 2 | 10 | |||
| 0 | 10 | |||
| 3 | 1 | , | 0 | |
| 1 | , | 5 | ||
| - | 3 | , | 0 | |
| 2 | 6 | , | 5 |
The solution is: 26,5
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