Solution - Long subtraction
885
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 9 | 0 | 0 | |
| 9 | |||
| - | 6 | ||
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 2 from the number to the left (90) which becomes (88) and get (20).
| Place value | hundreds | tens | ones |
| 8 | 8 | 20 | |
| 9 | 0 | 0 | |
| 9 | |||
| - | 6 | ||
Subtract the numbers in the ones column from the top number:
20-9-6=5
| Place value | hundreds | tens | ones |
| 8 | 8 | 20 | |
| 9 | 0 | 0 | |
| 9 | |||
| - | 6 | ||
| 5 |
Write 8 in the tens place.
| Place value | hundreds | tens | ones |
| 8 | 8 | 20 | |
| 9 | 0 | 0 | |
| 9 | |||
| - | 6 | ||
| 8 | 5 |
Write 8 in the hundreds place.
| Place value | hundreds | tens | ones |
| 8 | 8 | 20 | |
| 9 | 0 | 0 | |
| 9 | |||
| - | 6 | ||
| 8 | 8 | 5 |
The solution is: 885
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