Soluzione - Long subtraction
14,9
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 9 | 1 | , | 8 | |
| - | 7 | 6 | , | 9 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (8) 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 (18).
| Place value | tens | ones | . | tenths |
| 0 | 18 | |||
| 9 | 1 | , | 8 | |
| - | 7 | 6 | , | 9 |
| , |
Subtract the numbers in the tenths column from the top number:
18-9=9
| Place value | tens | ones | . | tenths |
| 0 | 18 | |||
| 9 | 1 | , | 8 | |
| - | 7 | 6 | , | 9 |
| , | 9 |
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (10).
| Place value | tens | ones | . | tenths |
| 8 | 10 | |||
| 0 | 18 | |||
| 9 | 1 | , | 8 | |
| - | 7 | 6 | , | 9 |
| , | 9 |
Subtract the numbers in the ones column from the top number:
10-6=4
| Place value | tens | ones | . | tenths |
| 8 | 10 | |||
| 0 | 18 | |||
| 9 | 1 | , | 8 | |
| - | 7 | 6 | , | 9 |
| 4 | , | 9 |
Subtract the numbers in the tens column from the top number:
8-7=1
| Place value | tens | ones | . | tenths |
| 8 | 10 | |||
| 0 | 18 | |||
| 9 | 1 | , | 8 | |
| - | 7 | 6 | , | 9 |
| 1 | 4 | , | 9 |
The solution is: 14,9
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this