Solution - Long subtraction
457.2
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 7 | 0 | 2 | . | 8 | |
| - | 2 | 4 | 5 | . | 6 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
8-6=2
| Place value | hundreds | tens | ones | . | tenths |
| 7 | 0 | 2 | . | 8 | |
| - | 2 | 4 | 5 | . | 6 |
| . | 2 |
Because the upper digit (2) in the ones column is too small to get a positive difference, borrow 1 from the number to the left (70) which becomes (69) and get (12).
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 9 | 12 | |||
| 7 | 0 | 2 | . | 8 | |
| - | 2 | 4 | 5 | . | 6 |
| . | 2 |
Subtract the numbers in the ones column from the top number:
12-5=7
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 9 | 12 | |||
| 7 | 0 | 2 | . | 8 | |
| - | 2 | 4 | 5 | . | 6 |
| 7 | . | 2 |
Subtract the numbers in the tens column from the top number:
9-4=5
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 9 | 12 | |||
| 7 | 0 | 2 | . | 8 | |
| - | 2 | 4 | 5 | . | 6 |
| 5 | 7 | . | 2 |
Subtract the numbers in the hundreds column from the top number:
6-2=4
| Place value | hundreds | tens | ones | . | tenths |
| 6 | 9 | 12 | |||
| 7 | 0 | 2 | . | 8 | |
| - | 2 | 4 | 5 | . | 6 |
| 4 | 5 | 7 | . | 2 |
The solution is: 457.2
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