Soluzione - Long subtraction
17,32
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
8-6=2
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| , | 2 |
Because the upper digit (1) in the tenths 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 (11).
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 11 | ||||
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| , | 2 |
Subtract the numbers in the tenths column from the top number:
11-8=3
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 11 | ||||
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| , | 3 | 2 |
Because the upper digit (4) 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 (14).
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 14 | ||||
| 4 | 11 | ||||
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| , | 3 | 2 |
Subtract the numbers in the ones column from the top number:
14-7=7
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 14 | ||||
| 4 | 11 | ||||
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| 7 | , | 3 | 2 |
Subtract the numbers in the tens column from the top number:
5-4=1
| Place value | tens | ones | . | tenths | hundredths |
| 5 | 14 | ||||
| 4 | 11 | ||||
| 6 | 5 | , | 1 | 8 | |
| - | 4 | 7 | , | 8 | 6 |
| 1 | 7 | , | 3 | 2 |
The solution is: 17,32
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