Soluzione - Long subtraction
2.994
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
2. Subtract the numbers using long subtraction method
Because the upper digit (4) in the ones column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (14).
| Place value | thousands | hundreds | tens | ones |
| 0 | 14 | |||
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
Subtract the numbers in the ones column from the top number:
14-2-8=4
| Place value | thousands | hundreds | tens | ones |
| 0 | 14 | |||
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
| 4 |
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 (30) which becomes (29) and get (10).
| Place value | thousands | hundreds | tens | ones |
| 2 | 9 | 10 | ||
| 0 | 14 | |||
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
| 4 |
Subtract the numbers in the tens column from the top number:
10-1=9
| Place value | thousands | hundreds | tens | ones |
| 2 | 9 | 10 | ||
| 0 | 14 | |||
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
| 9 | 4 |
Write 9 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 2 | 9 | 10 | ||
| 0 | 14 | |||
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
| 9 | 9 | 4 |
Write 2 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 2 | 9 | 10 | ||
| 0 | 14 | |||
| 3 | 0 | 1 | 4 | |
| 2 | ||||
| - | 1 | 8 | ||
| 2 | 9 | 9 | 4 |
The solution is: 2,994
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