Soluzione - Long subtraction
69
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 3 | 6 | 0 | |
| - | 2 | 9 | 1 |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (6) in the next number place which becomes (5) and get (10).
| Place value | hundreds | tens | ones |
| 5 | 10 | ||
| 3 | 6 | 0 | |
| - | 2 | 9 | 1 |
Subtract the numbers in the ones column from the top number:
10-1=9
| Place value | hundreds | tens | ones |
| 5 | 10 | ||
| 3 | 6 | 0 | |
| - | 2 | 9 | 1 |
| 9 |
Because the upper digit (5) in the tens 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 (15).
| Place value | hundreds | tens | ones |
| 2 | 15 | ||
| 5 | 10 | ||
| 3 | 6 | 0 | |
| - | 2 | 9 | 1 |
| 9 |
Subtract the numbers in the tens column from the top number:
15-9=6
| Place value | hundreds | tens | ones |
| 2 | 15 | ||
| 5 | 10 | ||
| 3 | 6 | 0 | |
| - | 2 | 9 | 1 |
| 6 | 9 |
Subtract the numbers in the hundreds column from the top number:
2-2=0
| Place value | hundreds | tens | ones |
| 2 | 15 | ||
| 5 | 10 | ||
| 3 | 6 | 0 | |
| - | 2 | 9 | 1 |
| 0 | 6 | 9 |
The solution is: 69
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this