Solution - Long subtraction
458.3
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 7 | 6 | 2 | . | 8 | |
| - | 3 | 0 | 4 | . | 5 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
8-5=3
| Place value | hundreds | tens | ones | . | tenths |
| 7 | 6 | 2 | . | 8 | |
| - | 3 | 0 | 4 | . | 5 |
| . | 3 |
Because the upper digit (2) in the ones 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 | ||||
| 7 | 6 | 2 | . | 8 | |
| - | 3 | 0 | 4 | . | 5 |
| . | 3 |
Subtract the numbers in the ones column from the top number:
12-4=8
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 12 | ||||
| 7 | 6 | 2 | . | 8 | |
| - | 3 | 0 | 4 | . | 5 |
| 8 | . | 3 |
Subtract the numbers in the tens column from the top number:
5-0=5
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 12 | ||||
| 7 | 6 | 2 | . | 8 | |
| - | 3 | 0 | 4 | . | 5 |
| 5 | 8 | . | 3 |
Subtract the numbers in the hundreds column from the top number:
7-3=4
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 12 | ||||
| 7 | 6 | 2 | . | 8 | |
| - | 3 | 0 | 4 | . | 5 |
| 4 | 5 | 8 | . | 3 |
The solution is: 458.3
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