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 | thousandths |
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (4) in the thousandths column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (14).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , |
Subtract the numbers in the thousandths column from the top number:
14-5=9
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , | 9 |
Subtract the numbers in the hundredths column from the top number:
8-8=0
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , | 0 | 9 |
Because the upper digit (5) in the tenths 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 (15).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 15 | |||||
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , | 0 | 9 |
Subtract the numbers in the tenths column from the top number:
15-6=9
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 15 | |||||
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , | 9 | 0 | 9 |
Because the upper digit (0) in the ones 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 | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 10 | |||||
| 0 | 15 | |||||
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| , | 9 | 0 | 9 |
Subtract the numbers in the ones column from the top number:
10-5=5
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 10 | |||||
| 0 | 15 | |||||
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| 5 | , | 9 | 0 | 9 |
Subtract the numbers in the tens column from the top number:
1-1=0
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 10 | |||||
| 0 | 15 | |||||
| 8 | 14 | |||||
| 2 | 1 | , | 5 | 9 | 4 | |
| - | 1 | 5 | , | 6 | 8 | 5 |
| 0 | 5 | , | 9 | 0 | 9 |
The solution is: 5,909
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