Soluzione - Long subtraction
30,7
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 3 | 1 | , | 2 | |
| - | 0 | , | 5 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (2) in the tenths 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).
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 3 | 1 | , | 2 | |
| - | 0 | , | 5 | |
| , |
Subtract the numbers in the tenths column from the top number:
12-5=7
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 3 | 1 | , | 2 | |
| - | 0 | , | 5 | |
| , | 7 |
Subtract the numbers in the ones column from the top number:
0-0=0
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 3 | 1 | , | 2 | |
| - | 0 | , | 5 | |
| 0 | , | 7 |
Write 3 in the tens place.
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 3 | 1 | , | 2 | |
| - | 0 | , | 5 | |
| 3 | 0 | , | 7 |
The solution is: 30,7
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this