Solution - Long subtraction
447.6
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 2 | 9 | . | 9 | |
| - | 1 | 8 | 2 | . | 3 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
9-3=6
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 2 | 9 | . | 9 | |
| - | 1 | 8 | 2 | . | 3 |
| . | 6 |
Subtract the numbers in the ones column from the top number:
9-2=7
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 2 | 9 | . | 9 | |
| - | 1 | 8 | 2 | . | 3 |
| 7 | . | 6 |
Because the upper digit (2) in the tens 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 (12).
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 12 | ||||
| 6 | 2 | 9 | . | 9 | |
| - | 1 | 8 | 2 | . | 3 |
| 7 | . | 6 |
Subtract the numbers in the tens column from the top number:
12-8=4
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 12 | ||||
| 6 | 2 | 9 | . | 9 | |
| - | 1 | 8 | 2 | . | 3 |
| 4 | 7 | . | 6 |
Subtract the numbers in the hundreds column from the top number:
5-1=4
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 12 | ||||
| 6 | 2 | 9 | . | 9 | |
| - | 1 | 8 | 2 | . | 3 |
| 4 | 4 | 7 | . | 6 |
The solution is: 447.6
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