Solution - Long subtraction
3.5
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
Place value | ones | . | tenths |
4 | |||
- | 0 | . | 5 |
. |
Put zeros in the blank number places:
Place value | ones | . | tenths |
4 | . | 0 | |
- | 0 | . | 5 |
. |
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 1 from the digit (4) in the next number place which becomes (3) and get (10).
Place value | ones | . | tenths |
3 | 10 | ||
4 | . | 0 | |
- | 0 | . | 5 |
. |
Subtract the numbers in the tenths column from the top number:
10-0-5=5
Place value | ones | . | tenths |
3 | 10 | ||
4 | . | 0 | |
- | 0 | . | 5 |
. | 5 |
Subtract the numbers in the ones column from the top number:
3-0=3
Place value | ones | . | tenths |
3 | 10 | ||
4 | . | 0 | |
- | 0 | . | 5 |
3 | . | 5 |
The solution is: 3.5
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