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 | ten thousandths | hundred thousandths |
| 7 | 5 | , | 8 | |||||
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the hundred thousandths 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 | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , |
Subtract the numbers in the hundred thousandths column from the top number:
10-0-6=4
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , | 4 |
Subtract the numbers in the ten thousandths column from the top number:
9-5=4
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , | 4 | 4 |
Subtract the numbers in the thousandths column from the top number:
9-0=9
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , | 9 | 4 | 4 |
Subtract the numbers in the hundredths column from the top number:
9-4=5
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , | 5 | 9 | 4 | 4 |
Subtract the numbers in the tenths column from the top number:
7-2=5
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| , | 5 | 5 | 9 | 4 | 4 |
Subtract the numbers in the ones column from the top number:
5-1=4
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| 4 | , | 5 | 5 | 9 | 4 | 4 |
Write 7 in the tens place.
| Place value | tens | ones | . | tenths | hundredths | thousandths | ten thousandths | hundred thousandths |
| 7 | 9 | 9 | 9 | 10 | ||||
| 7 | 5 | , | 8 | 0 | 0 | 0 | 0 | |
| - | 1 | , | 2 | 4 | 0 | 5 | 6 | |
| 7 | 4 | , | 5 | 5 | 9 | 4 | 4 |
The solution is: 74,55944
Come ci siamo comportati?
Lasciaci un feedbackPerché imparare questo
Why learn this