Solution - Long subtraction
996
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 1 | 0 | 0 | 0 | |
| 1 | ||||
| - | 3 | |||
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the number to the left (100) which becomes (099) and get (10).
| Place value | thousands | hundreds | tens | ones |
| 0 | 9 | 9 | 10 | |
| 1 | 0 | 0 | 0 | |
| 1 | ||||
| - | 3 | |||
Subtract the numbers in the ones column from the top number:
10-1-3=6
| Place value | thousands | hundreds | tens | ones |
| 0 | 9 | 9 | 10 | |
| 1 | 0 | 0 | 0 | |
| 1 | ||||
| - | 3 | |||
| 6 |
Write 9 in the tens place.
| Place value | thousands | hundreds | tens | ones |
| 0 | 9 | 9 | 10 | |
| 1 | 0 | 0 | 0 | |
| 1 | ||||
| - | 3 | |||
| 9 | 6 |
Write 9 in the hundreds place.
| Place value | thousands | hundreds | tens | ones |
| 0 | 9 | 9 | 10 | |
| 1 | 0 | 0 | 0 | |
| 1 | ||||
| - | 3 | |||
| 9 | 9 | 6 |
Write 0 in the thousands place.
| Place value | thousands | hundreds | tens | ones |
| 0 | 9 | 9 | 10 | |
| 1 | 0 | 0 | 0 | |
| 1 | ||||
| - | 3 | |||
| 0 | 9 | 9 | 6 |
The solution is: 996
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