Soluzione - Long subtraction
1,57
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths |
| 7 | , | 2 | ||
| - | 5 | , | 6 | 3 |
| , |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths |
| 7 | , | 2 | 0 | |
| - | 5 | , | 6 | 3 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (2) in the next number place which becomes (1) and get (10).
| Place value | ones | . | tenths | hundredths |
| 1 | 10 | |||
| 7 | , | 2 | 0 | |
| - | 5 | , | 6 | 3 |
| , |
Subtract the numbers in the hundredths column from the top number:
10-0-3=7
| Place value | ones | . | tenths | hundredths |
| 1 | 10 | |||
| 7 | , | 2 | 0 | |
| - | 5 | , | 6 | 3 |
| , | 7 |
Because the upper digit (1) in the tenths column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (11).
| Place value | ones | . | tenths | hundredths |
| 6 | 11 | |||
| 1 | 10 | |||
| 7 | , | 2 | 0 | |
| - | 5 | , | 6 | 3 |
| , | 7 |
Subtract the numbers in the tenths column from the top number:
11-6=5
| Place value | ones | . | tenths | hundredths |
| 6 | 11 | |||
| 1 | 10 | |||
| 7 | , | 2 | 0 | |
| - | 5 | , | 6 | 3 |
| , | 5 | 7 |
Subtract the numbers in the ones column from the top number:
6-5=1
| Place value | ones | . | tenths | hundredths |
| 6 | 11 | |||
| 1 | 10 | |||
| 7 | , | 2 | 0 | |
| - | 5 | , | 6 | 3 |
| 1 | , | 5 | 7 |
The solution is: 1,57
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