Soluzione - Long subtraction
2,13
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths |
| 5 | , | 3 | ||
| - | 3 | , | 1 | 7 |
| , |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths |
| 5 | , | 3 | 0 | |
| - | 3 | , | 1 | 7 |
| , |
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 (3) in the next number place which becomes (2) and get (10).
| Place value | ones | . | tenths | hundredths |
| 2 | 10 | |||
| 5 | , | 3 | 0 | |
| - | 3 | , | 1 | 7 |
| , |
Subtract the numbers in the hundredths column from the top number:
10-0-7=3
| Place value | ones | . | tenths | hundredths |
| 2 | 10 | |||
| 5 | , | 3 | 0 | |
| - | 3 | , | 1 | 7 |
| , | 3 |
Subtract the numbers in the tenths column from the top number:
2-1=1
| Place value | ones | . | tenths | hundredths |
| 2 | 10 | |||
| 5 | , | 3 | 0 | |
| - | 3 | , | 1 | 7 |
| , | 1 | 3 |
Subtract the numbers in the ones column from the top number:
5-3=2
| Place value | ones | . | tenths | hundredths |
| 2 | 10 | |||
| 5 | , | 3 | 0 | |
| - | 3 | , | 1 | 7 |
| 2 | , | 1 | 3 |
The solution is: 2,13
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