Solution - Long subtraction
1.5
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths |
| 1 | . | 8 | |
| - | 0 | . | 3 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
8-3=5
| Place value | ones | . | tenths |
| 1 | . | 8 | |
| - | 0 | . | 3 |
| . | 5 |
Subtract the numbers in the ones column from the top number:
1-0=1
| Place value | ones | . | tenths |
| 1 | . | 8 | |
| - | 0 | . | 3 |
| 1 | . | 5 |
The solution is: 1.5
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