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 |
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
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 number to the left (30) which becomes (29) and get (12).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
Subtract the numbers in the ones column from the top number:
12-8=4
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 4 |
Subtract the numbers in the tens column from the top number:
9-1=8
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 8 | 4 |
Because the upper digit (2) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (12).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 12 | ||||
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 8 | 4 |
Subtract the numbers in the hundreds column from the top number:
12-4=8
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 12 | ||||
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 8 | 8 | 4 |
Because the upper digit (4) in the thousands column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (14).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 14 | ||||
| 4 | 12 | ||||
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 8 | 8 | 4 |
Subtract the numbers in the thousands column from the top number:
14-9=5
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 14 | ||||
| 4 | 12 | ||||
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 5 | 8 | 8 | 4 |
Write 6 in the ten thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 14 | ||||
| 4 | 12 | ||||
| 2 | 9 | 12 | |||
| 7 | 5 | 3 | 0 | 2 | |
| - | 9 | 4 | 1 | 8 | |
| 6 | 5 | 8 | 8 | 4 |
The solution is: 65,884
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this