Soluzione - Long subtraction
270,3
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 8 | 6 | |||
| - | 1 | 5 | , | 7 | |
| , |
Put zeros in the blank number places:
| Place value | hundreds | tens | ones | . | tenths |
| 2 | 8 | 6 | , | 0 | |
| - | 1 | 5 | , | 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 digit (6) in the next number place which becomes (5) and get (10).
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 10 | ||||
| 2 | 8 | 6 | , | 0 | |
| - | 1 | 5 | , | 7 | |
| , |
Subtract the numbers in the tenths column from the top number:
10-0-7=3
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 10 | ||||
| 2 | 8 | 6 | , | 0 | |
| - | 1 | 5 | , | 7 | |
| , | 3 |
Subtract the numbers in the ones column from the top number:
5-5=0
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 10 | ||||
| 2 | 8 | 6 | , | 0 | |
| - | 1 | 5 | , | 7 | |
| 0 | , | 3 |
Subtract the numbers in the tens column from the top number:
8-1=7
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 10 | ||||
| 2 | 8 | 6 | , | 0 | |
| - | 1 | 5 | , | 7 | |
| 7 | 0 | , | 3 |
Write 2 in the hundreds place.
| Place value | hundreds | tens | ones | . | tenths |
| 5 | 10 | ||||
| 2 | 8 | 6 | , | 0 | |
| - | 1 | 5 | , | 7 | |
| 2 | 7 | 0 | , | 3 |
The solution is: 270,3
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this