Soluzione - Long subtraction
342
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
6-4=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
| 2 |
Subtract the numbers in the tens column from the top number:
4-0=4
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
| 4 | 2 |
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 | ||||
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
| 4 | 2 |
Subtract the numbers in the hundreds column from the top number:
12-9=3
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 12 | ||||
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
| 3 | 4 | 2 |
Subtract the numbers in the thousands column from the top number:
4-4=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 12 | ||||
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
| 0 | 3 | 4 | 2 |
Subtract the numbers in the ten thousands column from the top number:
1-1=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 12 | ||||
| 1 | 5 | 2 | 4 | 6 | |
| - | 1 | 4 | 9 | 0 | 4 |
| 0 | 0 | 3 | 4 | 2 |
The solution is: 342
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