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 |
5 | 7 | ||||
- | 1 | 9 | , | 9 | 5 |
, |
Put zeros in the blank number places:
Place value | tens | ones | . | tenths | hundredths |
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 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 (7.0) which becomes (6.9) and get (10).
Place value | tens | ones | . | tenths | hundredths |
6 | 9 | 10 | |||
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 5 |
, |
Subtract the numbers in the hundredths column from the top number:
10-0-5=5
Place value | tens | ones | . | tenths | hundredths |
6 | 9 | 10 | |||
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 5 |
, | 5 |
Subtract the numbers in the tenths column from the top number:
9-9=0
Place value | tens | ones | . | tenths | hundredths |
6 | 9 | 10 | |||
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 5 |
, | 0 | 5 |
Because the upper digit (6) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (16).
Place value | tens | ones | . | tenths | hundredths |
4 | 16 | ||||
6 | 9 | 10 | |||
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 5 |
, | 0 | 5 |
Subtract the numbers in the ones column from the top number:
16-9=7
Place value | tens | ones | . | tenths | hundredths |
4 | 16 | ||||
6 | 9 | 10 | |||
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 5 |
7 | , | 0 | 5 |
Subtract the numbers in the tens column from the top number:
4-1=3
Place value | tens | ones | . | tenths | hundredths |
4 | 16 | ||||
6 | 9 | 10 | |||
5 | 7 | , | 0 | 0 | |
- | 1 | 9 | , | 9 | 5 |
3 | 7 | , | 0 | 5 |
The solution is: 37,05
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