Solution - Long subtraction
15.8
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
Place value | tens | ones | . | tenths |
1 | 8 | . | 4 | |
- | 2 | . | 6 | |
. |
2. Subtract the numbers using long subtraction method
Because the upper digit (4) in the tenths column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (14).
Place value | tens | ones | . | tenths |
7 | 14 | |||
1 | 8 | . | 4 | |
- | 2 | . | 6 | |
. |
Subtract the numbers in the tenths column from the top number:
14-6=8
Place value | tens | ones | . | tenths |
7 | 14 | |||
1 | 8 | . | 4 | |
- | 2 | . | 6 | |
. | 8 |
Subtract the numbers in the ones column from the top number:
7-2=5
Place value | tens | ones | . | tenths |
7 | 14 | |||
1 | 8 | . | 4 | |
- | 2 | . | 6 | |
5 | . | 8 |
Write 1 in the tens place.
Place value | tens | ones | . | tenths |
7 | 14 | |||
1 | 8 | . | 4 | |
- | 2 | . | 6 | |
1 | 5 | . | 8 |
The solution is: 15.8
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