Soluzione - Long subtraction
4,09
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths |
| 7 | , | 9 | 5 | |
| - | 3 | , | 8 | 6 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (5) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (15).
| Place value | ones | . | tenths | hundredths |
| 8 | 15 | |||
| 7 | , | 9 | 5 | |
| - | 3 | , | 8 | 6 |
| , |
Subtract the numbers in the hundredths column from the top number:
15-6=9
| Place value | ones | . | tenths | hundredths |
| 8 | 15 | |||
| 7 | , | 9 | 5 | |
| - | 3 | , | 8 | 6 |
| , | 9 |
Subtract the numbers in the tenths column from the top number:
8-8=0
| Place value | ones | . | tenths | hundredths |
| 8 | 15 | |||
| 7 | , | 9 | 5 | |
| - | 3 | , | 8 | 6 |
| , | 0 | 9 |
Subtract the numbers in the ones column from the top number:
7-3=4
| Place value | ones | . | tenths | hundredths |
| 8 | 15 | |||
| 7 | , | 9 | 5 | |
| - | 3 | , | 8 | 6 |
| 4 | , | 0 | 9 |
The solution is: 4,09
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