Solution - Long subtraction
248.1
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 5 | 0 | . | 1 | |
| - | 2 | ||||
| . |
Put zeros in the blank number places:
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 5 | 0 | . | 1 | |
| - | 2 | . | 0 | ||
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the tenths column from the top number:
1-0=1
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 5 | 0 | . | 1 | |
| - | 2 | . | 0 | ||
| . | 1 |
Because the upper digit (0) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (10).
| Place value | hundreds | tens | ones | . | tenths |
| 4 | 10 | ||||
| 2 | 5 | 0 | . | 1 | |
| - | 2 | . | 0 | ||
| . | 1 |
Subtract the numbers in the ones column from the top number:
10-2=8
| Place value | hundreds | tens | ones | . | tenths |
| 4 | 10 | ||||
| 2 | 5 | 0 | . | 1 | |
| - | 2 | . | 0 | ||
| 8 | . | 1 |
Write 4 in the tens place.
| Place value | hundreds | tens | ones | . | tenths |
| 4 | 10 | ||||
| 2 | 5 | 0 | . | 1 | |
| - | 2 | . | 0 | ||
| 4 | 8 | . | 1 |
Write 2 in the hundreds place.
| Place value | hundreds | tens | ones | . | tenths |
| 4 | 10 | ||||
| 2 | 5 | 0 | . | 1 | |
| - | 2 | . | 0 | ||
| 2 | 4 | 8 | . | 1 |
The solution is: 248.1
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