Solution - Long subtraction
392,000
Step-by-step explanation
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 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 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 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 0 |
Subtract the numbers in the tens column from the top number:
0-0=0
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 0 | 0 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 0 | 0 |
Subtract the numbers in the hundreds column from the top number:
0-0=0
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 4 | 0 | 0 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 0 | 0 | 0 |
Because the upper digit (0) in the thousands column is too small to get a positive difference, borrow 1 from the number to the left (40) which becomes (39) and get (10).
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 10 | ||||
| 4 | 0 | 0 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 0 | 0 | 0 |
Subtract the numbers in the thousands column from the top number:
10-8=2
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 10 | ||||
| 4 | 0 | 0 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 2 | 0 | 0 | 0 |
Write 9 in the ten thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 10 | ||||
| 4 | 0 | 0 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 9 | 2 | 0 | 0 | 0 |
Write 3 in the hundred thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| 3 | 9 | 10 | ||||
| 4 | 0 | 0 | 0 | 0 | 0 | |
| - | 8 | 0 | 0 | 0 | ||
| 3 | 9 | 2 | 0 | 0 | 0 |
The solution is: 392,000
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