Solution - Long subtraction
118
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 1 | 3 | 6 | |
| - | 1 | 8 | |
2. Subtract the numbers using long subtraction method
Because the upper digit (6) in the ones 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 (16).
| Place value | hundreds | tens | ones |
| 2 | 16 | ||
| 1 | 3 | 6 | |
| - | 1 | 8 | |
Subtract the numbers in the ones column from the top number:
16-8=8
| Place value | hundreds | tens | ones |
| 2 | 16 | ||
| 1 | 3 | 6 | |
| - | 1 | 8 | |
| 8 |
Subtract the numbers in the tens column from the top number:
2-1=1
| Place value | hundreds | tens | ones |
| 2 | 16 | ||
| 1 | 3 | 6 | |
| - | 1 | 8 | |
| 1 | 8 |
Write 1 in the hundreds place.
| Place value | hundreds | tens | ones |
| 2 | 16 | ||
| 1 | 3 | 6 | |
| - | 1 | 8 | |
| 1 | 1 | 8 |
The solution is: 118
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