Soluzione - Long subtraction
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| , |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
7-6=1
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| , | 1 |
Because the upper digit (0) 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 (10).
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| , | 1 |
Subtract the numbers in the tenths column from the top number:
10-8=2
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| , | 2 | 1 |
Subtract the numbers in the ones column from the top number:
6-5=1
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| 1 | , | 2 | 1 |
Subtract the numbers in the tens column from the top number:
8-3=5
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| 5 | 1 | , | 2 | 1 |
Because the upper digit (0) in the hundreds 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 | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||||
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| 5 | 1 | , | 2 | 1 |
Subtract the numbers in the hundreds column from the top number:
10-8=2
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||||
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| 2 | 5 | 1 | , | 2 | 1 |
Subtract the numbers in the thousands column from the top number:
2-1=1
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 2 | 10 | ||||||
| 6 | 10 | ||||||
| 3 | 0 | 8 | 7 | , | 0 | 7 | |
| - | 1 | 8 | 3 | 5 | , | 8 | 6 |
| 1 | 2 | 5 | 1 | , | 2 | 1 |
The solution is: 1251,21
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