Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
0-0=0
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 0 |
Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (10).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 0 |
Subtract the numbers in the tens column from the top number:
10-2=8
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 8 | 0 |
Because the upper digit (2) in the hundreds column is too small to get a positive difference, borrow 1 from the number to the left (400) which becomes (399) and get (12).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 9 | 12 | |||
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 8 | 0 |
Subtract the numbers in the hundreds column from the top number:
12-8=4
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 9 | 12 | |||
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 4 | 8 | 0 |
Subtract the numbers in the thousands column from the top number:
9-0=9
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 9 | 12 | |||
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 9 | 4 | 8 | 0 |
Subtract the numbers in the ten thousands column from the top number:
9-2=7
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 9 | 12 | |||
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 7 | 9 | 4 | 8 | 0 |
Write 3 in the hundred thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 9 | 12 | |||
| 2 | 10 | |||||
| 4 | 0 | 0 | 3 | 0 | 0 | |
| - | 2 | 0 | 8 | 2 | 0 | |
| 3 | 7 | 9 | 4 | 8 | 0 |
The solution is: 379,480
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