Soluzione - Long subtraction
8,75
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 5 | ||||
| - | 6 | , | 2 | 5 | |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| , |
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 number to the left (5.0) which becomes (4.9) and get (10).
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 9 | 10 | |||
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| , |
Subtract the numbers in the hundredths column from the top number:
10-0-5=5
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 9 | 10 | |||
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| , | 5 |
Subtract the numbers in the tenths column from the top number:
9-2=7
| Place value | tens | ones | . | tenths | hundredths |
| 4 | 9 | 10 | |||
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| , | 7 | 5 |
Because the upper digit (4) 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 (14).
| Place value | tens | ones | . | tenths | hundredths |
| 0 | 14 | ||||
| 4 | 9 | 10 | |||
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| , | 7 | 5 |
Subtract the numbers in the ones column from the top number:
14-6=8
| Place value | tens | ones | . | tenths | hundredths |
| 0 | 14 | ||||
| 4 | 9 | 10 | |||
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| 8 | , | 7 | 5 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| 0 | 14 | ||||
| 4 | 9 | 10 | |||
| 1 | 5 | , | 0 | 0 | |
| - | 6 | , | 2 | 5 | |
| 0 | 8 | , | 7 | 5 |
The solution is: 8,75
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this