Solution - Long subtraction
144
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 1 | 6 | 8 | |
| 8 | |||
| - | 1 | 6 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (8) in the ones column is too small to get a positive difference, borrow 1 from the digit (6) in the next number place which becomes (5) and get (18).
| Place value | hundreds | tens | ones |
| 5 | 18 | ||
| 1 | 6 | 8 | |
| 8 | |||
| - | 1 | 6 | |
Subtract the numbers in the ones column from the top number:
18-8-6=4
| Place value | hundreds | tens | ones |
| 5 | 18 | ||
| 1 | 6 | 8 | |
| 8 | |||
| - | 1 | 6 | |
| 4 |
Subtract the numbers in the tens column from the top number:
5-1=4
| Place value | hundreds | tens | ones |
| 5 | 18 | ||
| 1 | 6 | 8 | |
| 8 | |||
| - | 1 | 6 | |
| 4 | 4 |
Write 1 in the hundreds place.
| Place value | hundreds | tens | ones |
| 5 | 18 | ||
| 1 | 6 | 8 | |
| 8 | |||
| - | 1 | 6 | |
| 1 | 4 | 4 |
The solution is: 144
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