Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
2. Subtract the numbers using long subtraction method
Because the upper digit (2) in the ones 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 (12).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
Subtract the numbers in the ones column from the top number:
12-5=7
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 7 |
Subtract the numbers in the tens column from the top number:
7-5=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 2 | 7 |
Because the upper digit (1) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (11).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 11 | ||||
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 2 | 7 |
Subtract the numbers in the hundreds column from the top number:
11-2=9
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 11 | ||||
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 9 | 2 | 7 |
Because the upper digit (1) in the thousands column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (11).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 3 | 11 | ||||
| 1 | 11 | ||||
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 9 | 2 | 7 |
Subtract the numbers in the thousands column from the top number:
11-6=5
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 3 | 11 | ||||
| 1 | 11 | ||||
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 5 | 9 | 2 | 7 |
Subtract the numbers in the ten thousands column from the top number:
3-1=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 3 | 11 | ||||
| 1 | 11 | ||||
| 7 | 12 | ||||
| 4 | 2 | 1 | 8 | 2 | |
| - | 1 | 6 | 2 | 5 | 5 |
| 2 | 5 | 9 | 2 | 7 |
The solution is: 25,927
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this