Solution - Long subtraction
6.6
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 0 | |||
| 0 | . | 8 | ||
| - | 2 | . | 6 | |
| . |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths |
| 1 | 0 | . | 0 | |
| 0 | . | 8 | ||
| - | 2 | . | 6 | |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the tenths column is too small to get a positive difference, borrow 2 from the number to the left (10) which becomes (08) and get (20).
| Place value | tens | ones | . | tenths |
| 0 | 20 | |||
| 1 | 0 | . | 0 | |
| 0 | . | 8 | ||
| - | 2 | . | 6 | |
| . |
Subtract the numbers in the tenths column from the top number:
20-0-8-6=6
| Place value | tens | ones | . | tenths |
| 0 | 20 | |||
| 1 | 0 | . | 0 | |
| 0 | . | 8 | ||
| - | 2 | . | 6 | |
| . | 6 |
Subtract the numbers in the ones column from the top number:
8-0-2=6
| Place value | tens | ones | . | tenths |
| 0 | 20 | |||
| 1 | 0 | . | 0 | |
| 0 | . | 8 | ||
| - | 2 | . | 6 | |
| 6 | . | 6 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths |
| 0 | 20 | |||
| 1 | 0 | . | 0 | |
| 0 | . | 8 | ||
| - | 2 | . | 6 | |
| 0 | 6 | . | 6 |
The solution is: 6.6
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