Solution - Long subtraction
7.7
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 0 | . | 8 | |
| 0 | . | 6 | ||
| - | 2 | . | 5 | |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (8) in the tenths column is too small to get a positive difference, borrow 1 from the number to the left (10) which becomes (09) and get (18).
| Place value | tens | ones | . | tenths |
| 0 | 18 | |||
| 1 | 0 | . | 8 | |
| 0 | . | 6 | ||
| - | 2 | . | 5 | |
| . |
Subtract the numbers in the tenths column from the top number:
18-6-5=7
| Place value | tens | ones | . | tenths |
| 0 | 18 | |||
| 1 | 0 | . | 8 | |
| 0 | . | 6 | ||
| - | 2 | . | 5 | |
| . | 7 |
Subtract the numbers in the ones column from the top number:
9-0-2=7
| Place value | tens | ones | . | tenths |
| 0 | 18 | |||
| 1 | 0 | . | 8 | |
| 0 | . | 6 | ||
| - | 2 | . | 5 | |
| 7 | . | 7 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths |
| 0 | 18 | |||
| 1 | 0 | . | 8 | |
| 0 | . | 6 | ||
| - | 2 | . | 5 | |
| 0 | 7 | . | 7 |
The solution is: 7.7
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