Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 4 | , | 3 | ||
| - | 7 | , | 8 | 3 | |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 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 (3) in the next number place which becomes (2) and get (10).
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| , |
Subtract the numbers in the hundredths column from the top number:
10-0-3=7
| Place value | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| , | 7 |
Because the upper digit (2) in the tenths column is too small to get a positive difference, borrow 1 from the digit (4) in the next number place which becomes (3) and get (12).
| Place value | tens | ones | . | tenths | hundredths |
| 3 | 12 | ||||
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| , | 7 |
Subtract the numbers in the tenths column from the top number:
12-8=4
| Place value | tens | ones | . | tenths | hundredths |
| 3 | 12 | ||||
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| , | 4 | 7 |
Because the upper digit (3) in the ones column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (13).
| Place value | tens | ones | . | tenths | hundredths |
| 0 | 13 | ||||
| 3 | 12 | ||||
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| , | 4 | 7 |
Subtract the numbers in the ones column from the top number:
13-7=6
| Place value | tens | ones | . | tenths | hundredths |
| 0 | 13 | ||||
| 3 | 12 | ||||
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| 6 | , | 4 | 7 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 0 | 13 | ||||
| 3 | 12 | ||||
| 2 | 10 | ||||
| 1 | 4 | , | 3 | 0 | |
| - | 7 | , | 8 | 3 | |
| 0 | 6 | , | 4 | 7 |
The solution is: 6,47
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