Soluzione - Long subtraction
17.211
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
5-4=1
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
| 1 |
Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the number to the left (600) which becomes (599) and get (10).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 9 | 9 | 10 | ||
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
| 1 |
Subtract the numbers in the tens column from the top number:
10-9=1
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 9 | 9 | 10 | ||
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
| 1 | 1 |
Subtract the numbers in the hundreds column from the top number:
9-7=2
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 9 | 9 | 10 | ||
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
| 2 | 1 | 1 |
Subtract the numbers in the thousands column from the top number:
9-2=7
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 9 | 9 | 10 | ||
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
| 7 | 2 | 1 | 1 |
Subtract the numbers in the ten thousands column from the top number:
5-4=1
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 5 | 9 | 9 | 10 | ||
| 6 | 0 | 0 | 0 | 5 | |
| - | 4 | 2 | 7 | 9 | 4 |
| 1 | 7 | 2 | 1 | 1 |
The solution is: 17,211
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