Soluzione - Long subtraction
16,83
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
5-2=3
| Place value | tens | ones | . | tenths | hundredths |
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| , | 3 |
Because the upper digit (6) 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 (16).
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 16 | ||||
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| , | 3 |
Subtract the numbers in the tenths column from the top number:
16-8=8
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 16 | ||||
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| , | 8 | 3 |
Because the upper digit (4) in the ones column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (14).
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 14 | ||||
| 4 | 16 | ||||
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| , | 8 | 3 |
Subtract the numbers in the ones column from the top number:
14-8=6
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 14 | ||||
| 4 | 16 | ||||
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| 6 | , | 8 | 3 |
Subtract the numbers in the tens column from the top number:
7-6=1
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 14 | ||||
| 4 | 16 | ||||
| 8 | 5 | , | 6 | 5 | |
| - | 6 | 8 | , | 8 | 2 |
| 1 | 6 | , | 8 | 3 |
The solution is: 16,83
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