Soluzione - Long subtraction
7268,3
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 8 | 0 | 0 | 0 | |||
| - | 7 | 3 | 1 | , | 7 | |
| , |
Put zeros in the blank number places:
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the tenths column is too small to get a positive difference, borrow 1 from the number to the left (8.000) which becomes (7.999) and get (10).
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 7 | 9 | 9 | 10 | |||
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| , |
Subtract the numbers in the tenths column from the top number:
10-0-7=3
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 7 | 9 | 9 | 10 | |||
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| , | 3 |
Subtract the numbers in the ones column from the top number:
9-1=8
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 7 | 9 | 9 | 10 | |||
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| 8 | , | 3 |
Subtract the numbers in the tens column from the top number:
9-3=6
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 7 | 9 | 9 | 10 | |||
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| 6 | 8 | , | 3 |
Subtract the numbers in the hundreds column from the top number:
9-7=2
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 7 | 9 | 9 | 10 | |||
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| 2 | 6 | 8 | , | 3 |
Write 7 in the thousands place.
| Place value | thousands | hundreds | tens | ones | . | tenths |
| 7 | 9 | 9 | 10 | |||
| 8 | 0 | 0 | 0 | , | 0 | |
| - | 7 | 3 | 1 | , | 7 | |
| 7 | 2 | 6 | 8 | , | 3 |
The solution is: 7268,3
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