Megoldás - Long subtraction
7,3
Lépésről lépésre magyarázat
1. Rewrite the numbers from top to bottom, aligned by their place values
| Helyiérték | tízesek | egyesek | . | tizedek |
| 1 | 3 | , | 7 | |
| 1 | , | 9 | ||
| - | 4 | , | 5 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (7) in the tizedek 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 (17).
| Helyiérték | tízesek | egyesek | . | tizedek |
| 2 | 17 | |||
| 1 | 3 | , | 7 | |
| 1 | , | 9 | ||
| - | 4 | , | 5 | |
| , |
Subtract the numbers in the tizedek column from the top number:
17-9-5=3
| Helyiérték | tízesek | egyesek | . | tizedek |
| 2 | 17 | |||
| 1 | 3 | , | 7 | |
| 1 | , | 9 | ||
| - | 4 | , | 5 | |
| , | 3 |
Because the upper digit (2) in the egyesek 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 (12).
| Helyiérték | tízesek | egyesek | . | tizedek |
| 0 | 12 | |||
| 2 | 17 | |||
| 1 | 3 | , | 7 | |
| 1 | , | 9 | ||
| - | 4 | , | 5 | |
| , | 3 |
Subtract the numbers in the egyesek column from the top number:
12-1-4=7
| Helyiérték | tízesek | egyesek | . | tizedek |
| 0 | 12 | |||
| 2 | 17 | |||
| 1 | 3 | , | 7 | |
| 1 | , | 9 | ||
| - | 4 | , | 5 | |
| 7 | , | 3 |
Write 0 in the tízesek place.
| Helyiérték | tízesek | egyesek | . | tizedek |
| 0 | 12 | |||
| 2 | 17 | |||
| 1 | 3 | , | 7 | |
| 1 | , | 9 | ||
| - | 4 | , | 5 | |
| 0 | 7 | , | 3 |
The solution is: 7,3
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