Soluzione - Long subtraction
5,7
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths |
| 8 | , | 4 | |
| 0 | , | 6 | |
| - | 2 | , | 1 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (4) in the tenths column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (14).
| Place value | ones | . | tenths |
| 7 | 14 | ||
| 8 | , | 4 | |
| 0 | , | 6 | |
| - | 2 | , | 1 |
| , |
Subtract the numbers in the tenths column from the top number:
14-6-1=7
| Place value | ones | . | tenths |
| 7 | 14 | ||
| 8 | , | 4 | |
| 0 | , | 6 | |
| - | 2 | , | 1 |
| , | 7 |
Subtract the numbers in the ones column from the top number:
7-0-2=5
| Place value | ones | . | tenths |
| 7 | 14 | ||
| 8 | , | 4 | |
| 0 | , | 6 | |
| - | 2 | , | 1 |
| 5 | , | 7 |
The solution is: 5,7
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this